It is awesome to see you talk about such current research in Astrophysics. As a Phd student who grinds these papers every day it is a joy to see you manage to share these concepts so understandable and yet very accurately. It is a joy to watch!
Yet I fail to understand which law made the "shorter" path "longer" for light to travel. Also how do X-rays show us the early universe? Also a gravitational lens?
The 2020 Redemption Arc is starting now. We got Bolivia kicking out fascists, Veritasium pumping out content, and humanity starting to wise up a bit. Let's hope this trend continues
Its incredible they can discern different stuff. Before the several images of the galaxy were circled I was looking all over the screen for them. If you handed me that picture before I watched this video, I would've told you they were different galaxies.
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
This blows my mind. I've always understood the concept of how objects in the sky are so far away that it takes a long time for the light to reach Earth, as if we're looking into the past. But I never considered the fact that objects between us and what we're observing could distort our observation. Science never ceases to amaze me.
The crazy thing is that it reaches us at all, as if those objects are transparent. It's literally seeing around objects, crazy. Space is so strange. In "micro" scale it appears to be affected by mass. How can something stretch so violently while mass holds it's ground.
That last sentence kinda feels wrong here. Instead of "Science never ceases to amaze me.", I feel it more appropriate to say "Reality never ceases to amaze me".
@@dangeros31 Science doesn't equal reality. What you are referring to as "science" actually refers to the scientific method which then provide results. But these results can change if the components in it are not constant. A.k.a variables. Variable expressions can change results thus by your definition change reality.
@@shozinryu4 I'm not saying Science is reality. I'm saying that reality is what already exists regardless of our perception; it is constant. Science is used to figure out reality, but even then Science can and is wrong, because, like you said it is always changing. Take for example the big bang. People take it as fact, but it is still just a theory that can not be completely proven. The smallest amount of evidence of scientists and people's ideal perspective of the world and universe can lead people in the wrong direction, thus making up their own false and ideal science that helps them cope with their lack of evidence. Science is just a tool to measure and observe, while reality is fact and constant; weather it can be correctly observed is another thing.
That is legitimately mind blowing. To see the exact same event not just on multiple places, but also at different times. And not only twice but six times? Imagine that in an ordinary world setting. Literally deja vu.
You can, with a camera. You can see the same event from different perspectives. It's pretty much the same. The light from the event from different angles.
Or maybe something similar happens with multiple universes or maybe with alternate universes and we think we experienced Deja Vu. The possibilities are infinite and we are yet to discover so much more. Wow.
@@GamesBond.007 It is probably not a supernova. You could find this object yourself in publically available online databases of astronomical objects and check its type. Find the first galaxy in question or lensed supernova first and then compare images. It might be tricky because these tools can be complex and built for professional astronomers, but you can do it with a little bit of trial and error ;)
That is legitimately mind blowing. To see the exact same event not just on multiple places, but also at different times. And not only twice but six times? Imagine that in an ordinary world setting. Literally deja vu. vu vu vu vu vu... what if that was reality and we're all just so relatively close that no 1 here notices - Oh, I found your cat by the way xx
@@nickllama5296 when we have 100 thousand of human still debating whether earth is round or flat, such content is not going to trend in next few years.
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
@@veritasium It's very good that you know your limits. I think you can also be a good example for a lot of people who might not be as conscious of their capabilities. Take all the time you need, we'll be waiting for you when you come back!
This excuse would work if we live on a neutron star and teacher is living on higher floors than your home. Actually in such conditions instead of time zones' discrete set based on longitude, like on Earth, it will be time rates continuum based on height levels, because of different distance to the center of the "black city-size star with about the mass of the Sun"
The fact that there are multiple images of the same galaxies, delaying the light that arrives to us at different intervals is blowing my mind. I never knew something like this exists. It's cool to keep learning new things about space that continue to astound me. I'll never get tired of it.
@@ViperDivinity The earth's deep sea is denser than you think, it gets dark every time you go deeper in water. It’s also like being in space but in water, you can’t even see, It’s like being inside a huge fog. So it’s hard for scientists to explore and find new sea creatures. Edit: My comment was confusing. So basically Earth’s deep sea is much more like space but it has an end and it is much more dense. once you enter a zone where no light would no longer could reach; you could experience very much pressure. And the thickness of fog made it so hard to see; it could be hard for scientists to search for creatures.
It's not so much that the universe is 'crazy'; the universe is what it is - and is absolute truth. It's more that it's beyond our (humans') realm of understanding...kinda like an insect trying to understand calculus. We're making progress tho.
this makes me think about how lucky we are in the universe, we have perfect solar eclipses, we have a bunch of planets in our solar system, and we got a perfect view on a duplicated supernova and its host galaxy to go with it. I can't believe how you get all this information, and how you teach it so well
Watching Veritasium convinces me that nothing is beyond our human capacity to understand, and that I understand so little of it. It is humbling, encouraging, mystical, logical, frightening, and comforting all at the same time. It is a wonderful universe. It is a wonderful channel. Thank you.
Given a very large amount of time, we'd eventually understand things - but how long would it be compared to a single human lifespan, we just don't know, and some things would likely remains not understandable when you die. Still, it's possible to fall to the cracks, and that day will have to wait a bit longer... th-cam.com/video/5hVmeOCJjOU/w-d-xo.html -> interesting talk from Sean Carroll (the idea once featured on Veritasium's channel as well).
I watch these videos now with renewed excitement and interest. I finally started at University of as a Physics student after years of watching videos by channels like this, which eventually led to my passion developing to the point where I had to take it more seriously. Crazy to think that, despite officially leaving education years ago, TH-cam channels like Veritasium would take me back purely out of a genuine interest that I never felt for any subject when I was actually in school. The point of this comment is to say thank you for the inspiration!! And to keep this sudden flood of videos coming! :D
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
So basically, every moment of every day is echoed through the eternity of space time, for all eternity? That’s pretty friggin amazing. The observable light that reflects from us out into the cosmos never goes away. Yeah I don’t feel insignificant or anything lol
How can you feel insignificant?! You point it out so well yourself -- eternal echoe. My dude, you're existence is permanent and forever. That thought makes me feel way more significant despite the size of this big place.
No one is insignificant compared to the universe, think of it like this, we are part of the universe, the universe is part of us and we are part of the universe.
You are insignificant if nothing will ever know of or acknowledge your existence. If your existence echoes throughout the universe, how could you possibly be insignificant?
@@jamiehosmer1481 well.. yes and no… although we are echoed throughout all of spacetime, isn’t there an end to the universe? Or at least the 4 proposed ends that astrophysicists have come up with? so is it a finite echo then, rather than an infinite one?
My 5 year old nephew loved watching this, he had an endless list of questions for me during & after lol.. He can't even sit for 2 minutes for his online kindergarten classes but he can sit still through this entire video.. Well done man.
I am a student in 9 th standard I wasn't much interested in science until I started seeing your videos , I think it's been a year and a half since I saw your first video . I was so satisfied that I started watching more of them and in no time I found my perspectives changed.Science had become my favourite subject especially physics .This happened just because of you.I would like to thank you from the depth of my heart for that .I feel now that I have an option to pursue in my life ahead as a career, in science and now I am hopeful for my future which I wasn't earlier,perhaps.Thank you so much sir! Please continue making videos on such topics .Your way of explaining topics is better than any other channel on you tube as far as I know( perhaps better than even my teachers). Really appreciate your videos !!!!!
I'm a random science guy advice: only science education could change our probability of survival! Now it is most probable that we're gonna extinct! Great you got the right way, encourage others who can't never tell your friends to take what they want, tell them to take science, I'm too from India and ya you will discover that how wrong are RELIGIONS are how wrong are the things we were taught... enjoy...
@subrat verma Same as you I too developed interest in Physics because of Derek and Michael Steven(from Vsauce) and I am really grateful to these guys. Best of luck for your future. And btw I am from India too :)
@@varunahlawat4863 You are absolutely correct And besides that we are taught things that assume only historic Importance nowadays. For e.g. I am being taught gravity the Newtonian way even today it's been more than 100 years for General relativity But it's mentions are not till high level university courses in India. So that definitely something wrong with the education system Thanks for your reply!!
@@Musiphymatic Thank you very much bro V sauce is also a pretty good channel, I really like that channel and apparently I got to know of Veritasium from Vsauce's Lenz'law video
I still giggle like a kid when seeing your videos like I used to 10 years ago. There's something so beautiful about understanding the mysteries of the universe. It's almost poetic
3 ปีที่แล้ว +9
It is so refreshing that somebody not just asks more questions, but answers the ones I was never even asked, but always wanted to know!
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
That closing remark beginning @11:36 is amazing. I had to go back a few times to listen to that. “What is contained in those distortions is information about the workings of our entire universe.” It’s really amazing how we can see so far away and glean bits of information.
What a great description of gravitational lensing! I'm just an amateur astrophotographer and have managed to image the "Twin Quasar" with my equipment, but I could never quite understand how the lensing produced (in that case) TWO images rather than some other effect. I think that I now less confused than before, so yay!
Astronomers: ye ±10000 years Also Astronomers: NO ±1 IS 🚫🚫❌😤 (but ye, the consequences of having such large range of values is that anything to do with a tiny difference in rates and changes will balloon up and really grow dramatically when used with real data values, that the error margin is as good as saying a human lives on average of 1ms to 2*10^14 years.
@@rancidalankar1322 - the Hubble constant is variable in time because in different regions the strength of the dark energy is varying with the density of the virtual particle activity in that region.
I watch these videos & I wonder how tiny we are & how short a period of time we exist..yet every problems that we face seems so big & significant in such a short period of time we live. These space videos makes me forget every pain that I have..😊
One of the most impressive pieces of astronomy work I have ever seen, to actually come up with a testable hypothesis and have it confirmed is science of the highest quality.
Well that's literally how science works. You make a prediction, then you make an experiment to see if the values you get from the prediction match the experiment values. If they do, your theory is probably correct. Every once in a while, your theory doesn't predict the outcome of a specific experiment, and the science cycle continues... At least that's how I understand it
Hey Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
@@thearchetype9829 I'd rather see a video about this idea and what possibilities it opens up, dsmatthews.blogspot.com/2020/04/covid-19-solution-changing-rules-of.html
They are actually very, very close together in the sky. The light is deflected by a tiny angle, and you would not be able to distinguish it from single source by eye even if it was bright enough to be visible. Hubble, however, has an absolutely incredible zoom, allowing it to take a region of space that would look to you like a single point in the sky and expand it out to show all the galaxies and clusters of galaxies that are there.
@Shinay You're the type of person that wakes up on a Monday morning and immediately takes to insulting people on social media... Your life sucks, but not as much as your syntax.
OMG I remember you from when I was a child! I use to watch your unboxing videos everyday! You got me into cubing when I was around 9, but I've stopped. Now I got to find my collection of cubes lmao XD
If a supernova is as bright as the moon, maybe that’s why some old paintings had 3 suns/moons in the sky. One of them was a supernova that was there for their whole lifetime
I think if 3 moons would have been in the sky for a whole generation as you suggest then that happening would have been historically marked somewhere. In other words, we would have know about it
10,000-20,000 years ago. The earliest possible recorded supernova, known as HB9( also known as two sun's), could have been viewed and recorded by unknown Indian observers in 4500±1000 BC. In 185 AD, Chinese astronomers recorded the appearance of a bright star in the sky, and observed that it took about eight months to fade from the sky. It was observed to sparkle like a star and did not move across the heavens like a comet.
Your videos are so fascinating, Derek, that I forget about my duties. Great, high quality content and your professionalism in each episode. Waiting for more cosmic news from you. Lots of love...:)
You shouldn't need to change your thumbnail and title to optimize the video for the algorithm, TH-cam's algorithm needs to be changed. There was so much information packed into this 13 minute video, it is insane to not watch this video. Great work, keep it up!
If even half my teachers could break things down like you do with said enthusiasm I might of wanted to learn a whole lot more when I was in school. You really do teach people alot.
I wrote about this for a school project two years ago! But even though I already knew about this discovery, your visuals and explanation were still super infomative! I can't believe I just found this video.
Looks like Arthur C Clarke got it right when he wrote: "It's full of stars." in 2001: A Space Odyssey That lensing effect must make a tricky job even trickier! 🤔👍
Man, this is truly awesome. It blew my mind and made my day. Thanks for sharing those informations with us ! Oh i'm french and I believe you speak french, donc merci beaucoup Dereck, c'est incroyable que l'on soit parvenu à faire ça ! Ça motive à se lancer en astrophysique !
I'm always astounded by how smart some scientists are. Especially physicists. And here I am, frustrated by my excel shenanigans...I think I still have a looooong way to go :c EDIT: Thanks for the supportive comments about my excel frustration :D you are very wholesome :3
Mathematicians are arguably even smarter, but you need to work hard just to appreciate that. Physics' connection to reality gives it ways to get popularized.
@@Zalamedas It's not just looking in the past, but you can choose which past are you looking at. 20 years, yet lightspeed. What had it got to go through...Fascinating.
The Bible tells us it is around 6,000 years of course. Around 2,000 years from Adam and Eve until Noah and the flood, then about 2,000 years from that until Jesus Christ died on the cross for our sins, and about 2,000 years from that until now. And if you think that is just a story, then why do you think the whole world uses the time frame of B.C and A.D? The Bible lists the genealogy from Adam and Eve all the way to Jesus Christ, so you can technically add all of that time up plus the year it is now and it will be around 6,000 years. Oh and also the Bible states that the earth is round.
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
Incredible . I was awstruck to know your version of sky as a transparent lens thereby giving multiple images of the same object ..a supernova.. hatsoff to you..Derek
But if you can't explain it then you don't really understand it? According to Einstein anyways. (Don't worry though, I don't really understand either!)
The gravity slows down the light. The light went in all directions, there were 4 lenses that redirected light back to us. We knew there were 4 lenses because the galaxy appeared in 4 different places. We saw the supernova in one of those places, ie from one of those lenses, then another, so we figured it's gonna appear the other place. somehow we figured out how long the delay was (maybe looking at how out-of-phase the rotation of the galaxy was in each image) and we added that to the supernova we saw to figure when we'll see it in the last image. @veritasium how'd I do?
its things like this that make me feel like the universe *wants* to be understood, by giving us all of these juicy hints full of information and challenging us to decode its message, revealing a little nugget of truth as a reward. that, or our brains are really fine tuned for living in this universe, to the point that we’re able to find answers from seemingly random stuff because of how great we are at recognizing patterns
I have watched this video multiple times and every time it gives me goosebumps. "For stars, 100k years is a brief window of time but for us short-lived humans it is forever."
That is the most beautiful thing Ive ever heard about the universe. It makes it even more mysterious and teaming with possible adventures for my scifi novels.
Lightning strikes are rare to predict but happen all the time With all the stars out there, the myths plays out that no matter how rare an event, it will likely happen, eventually
I know right? this happened before the earth even existed and yet they can see it by looking back in time through the universe. It really is incredible.
VeryCool stuff! Thanks again for making these videos. It seems harder to get this kind of info since Discovery channel went all Naked and afraid and ghost hunting but we still do get accurate information about how many crabs can fit in a boat and that Pirate Captains dont really leave their gold behind. There is amazing amounts of new discoveries that youve let me in on and now that crazy James Web Space Telescope is gonna fly soon, Im overjoyed
Well, you can't, not even once, as all you really capture is electromagnetic echoes of the event, but provided you are at the right spacetime you can see other echoes of the event :D
Jeez you really did just blow my mind! Its great that you are bringing these incredibly complicated subjects to an younger audience aswell. I would probably never stumble upon this if it wasnt for you.
@@prastarkumar6889 lol thats who i thought of first! Vsauce is how I found the science and education side of youtube and i have fallen in love ever since
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
An AGN could also have “time stamps” in it’s spectra that can be used to differentiate the light paths in a multi-lensed system. There’s an AGN in the northern hemisphere (I forget its name) with two distinct images that differ in age by a little over a year. Neat stuff.
scientists are very smart but you have to realize that you got this explain this to you in 13 minutes while hundreds of scientists spent thousands of hour doing the math and the research for this data.
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
If I understand correctly, it doesn't need to be immensely lensed, it just needs to travel through an immense amount of space in an immense amount of time. Both of which the universe has plenty of. The lens just has to deflect the light slightly and let it run for billions of years. But then, for two different paths to have such different travel times, at least two separate lenses would be required?
It is not really that immense if you think about it. Don't forget we are billons of light years away. Think about rays originating from a single point, even if the initial deviation between the rays is very small, as they continue to travel this deviation becomes more pronounced.
@@VioletGiraffe I think it's just because on such a big scale, a difference of 20 light years in the second image's curved path is not a lot, proportionally. Like the radius of the circle (or whatever) that fits that curvature is immense, and so is the distance from the supernova to us
@@VioletGiraffe The gravity from the clusters is pulling the light from different angles, which create different travel times to earth. He explains it well here: 4:29
Yet still high quality. To many creators have started crapping out daily vidoes just to make TH-cam's algorithm happy. Derek shows that you can make a successful channel without clickbait vlog tactics.
Veritasium you can make video on SERPINKI'S triangle The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
It is awesome to see you talk about such current research in Astrophysics. As a Phd student who grinds these papers every day it is a joy to see you manage to share these concepts so understandable and yet very accurately. It is a joy to watch!
hiii, i also want to become an astrophysicist and for that i have to do phd so share some information plz...
I'm glad there is someone who can explain it to us in a way we understand! I'll just stick to my electronics.
"phd student" XD why would you do this to yourself
@@darshild.makwana3283 I am happy to share some insights! Just shoot me an email
Yet I fail to understand which law made the "shorter" path "longer" for light to travel. Also how do X-rays show us the early universe? Also a gravitational lens?
One of the few youtubers that always produces top notch content is now pouring it en masse! Guess not all is bad for 2020.
The 2020 Redemption Arc is starting now.
We got Bolivia kicking out fascists, Veritasium pumping out content, and humanity starting to wise up a bit.
Let's hope this trend continues
Shhh 2020 might hear you
in "mass" badum tssss
Ummmm... One video a week is not en mass
Compared to previous frequency, this is en masse
Its incredible how much info scientists can extract from these tiny little smears of light
Its incredible they can discern different stuff. Before the several images of the galaxy were circled I was looking all over the screen for them. If you handed me that picture before I watched this video, I would've told you they were different galaxies.
Meanwhile, there are climate change deniers, flat earthers and vaccine haters. I wonder which groups are the knowledgable ones...
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
Incredible indeed. If they only put that effort into things that matter more like COVID-19
@@abdu2s I... you are aware that not everyone is a microbiologist/biochemist right?
This blows my mind. I've always understood the concept of how objects in the sky are so far away that it takes a long time for the light to reach Earth, as if we're looking into the past. But I never considered the fact that objects between us and what we're observing could distort our observation. Science never ceases to amaze me.
The crazy thing is that it reaches us at all, as if those objects are transparent. It's literally seeing around objects, crazy. Space is so strange. In "micro" scale it appears to be affected by mass. How can something stretch so violently while mass holds it's ground.
That last sentence kinda feels wrong here. Instead of "Science never ceases to amaze me.", I feel it more appropriate to say "Reality never ceases to amaze me".
@@dangeros31 Science doesn't equal reality. What you are referring to as "science" actually refers to the scientific method which then provide results. But these results can change if the components in it are not constant. A.k.a variables. Variable expressions can change results thus by your definition change reality.
@@shozinryu4
I'm not saying Science is reality. I'm saying that reality is what already exists regardless of our perception; it is constant. Science is used to figure out reality, but even then Science can and is wrong, because, like you said it is always changing. Take for example the big bang. People take it as fact, but it is still just a theory that can not be completely proven. The smallest amount of evidence of scientists and people's ideal perspective of the world and universe can lead people in the wrong direction, thus making up their own false and ideal science that helps them cope with their lack of evidence. Science is just a tool to measure and observe, while reality is fact and constant; weather it can be correctly observed is another thing.
@@dangeros31 whether*
not weather.
That is legitimately mind blowing. To see the exact same event not just on multiple places, but also at different times. And not only twice but six times? Imagine that in an ordinary world setting. Literally deja vu.
You can, with a camera. You can see the same event from different perspectives. It's pretty much the same. The light from the event from different angles.
Wow, deja vu, you've found a great connection!
Or maybe something similar happens with multiple universes or maybe with alternate universes and we think we experienced Deja Vu. The possibilities are infinite and we are yet to discover so much more. Wow.
@@GamesBond.007 It is probably not a supernova. You could find this object yourself in publically available online databases of astronomical objects and check its type. Find the first galaxy in question or lensed supernova first and then compare images. It might be tricky because these tools can be complex and built for professional astronomers, but you can do it with a little bit of trial and error ;)
That is legitimately mind blowing. To see the exact same event not just on multiple places, but also at different times. And not only twice but six times? Imagine that in an ordinary world setting. Literally deja vu. vu vu vu vu vu... what if that was reality and we're all just so relatively close that no 1 here notices - Oh, I found your cat by the way xx
This is the kind of content that needs to be on the trending tab
The large, large, large majority of mankind will look at this video and have absolutely no clue what on earth he's talking about.
Too many stupid people though.
Thinking hard. Brain hurt.
@@nickllama5296 when we have 100 thousand of human still debating whether earth is round or flat, such content is not going to trend in next few years.
Are you asking TH-cam algorithm to work against the interest* of their investors?
*wherever "interest" is written it has to be read as "money".
Quality or Quantity, choose one and choose wisely
Derek from Veritasium: I choose them both
❤️❤️❤️❤️
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
that what a decent team working like an well oiled machine can do
it's not sustainable. I'm gonna need a break after this.
@@veritasium It's very good that you know your limits. I think you can also be a good example for a lot of people who might not be as conscious of their capabilities. Take all the time you need, we'll be waiting for you when you come back!
@@veritasium Don't worry, just go take however long you want, and come back to produce more videos with greater zeal!
“Hey did you catch the supernova? If not, no worries, they’ll play re-runs in a year. Or twenty.”
Teacher in online class: why are you late?
Me: gravitational time delay.
@Opecuted more... about 8.4g
This excuse would work if we live on a neutron star and teacher is living on higher floors than your home.
Actually in such conditions instead of time zones' discrete set based on longitude, like on Earth, it will be time rates continuum based on height levels, because of different distance to the center of the "black city-size star with about the mass of the Sun"
I had to walk too close to your mama
Are you a light then ? XD
Teacher: next time do avoid passing by from heavy objects.
"Do you notice that the same galaxy appears three times in the image?"
Yeah I *totally* noticed
😂
Would that mean... we're seeing more galaxies than there actually are in the sky?
@@hyree you have to substract the ones not visible
@@hyree maybe they're all the same galaxy, being projected around a super massive black hole. Seen at different points in the timeline🤔😆
Todally man
Gravitational lensing makes things show up at different places AND at different times. Now that's cool
!
"Different places" and "different times" are two ways of saying the same thing. Now THAT'S cool.
@@davidsantiagoalonso its a bot
@@davidsantiagoalonso it's a bot:")
Yeah, this is some new revelation. We've gone through the simpler location-based ones, but making sure that time goes with it is something.
@Amey Shinde And at different moments as well ! Otherwise the observation wouldn't work.
The fact that there are multiple images of the same galaxies, delaying the light that arrives to us at different intervals is blowing my mind. I never knew something like this exists. It's cool to keep learning new things about space that continue to astound me. I'll never get tired of it.
Veritasium: Trying hard to explain gravitational lens
Me: 6:28 Smiley face
Same here 😂😂
yup
Probably the biggest smiley ever
Saw it right away, how sweet
Why Dereck did not do a quick pun there? lol
Even got the updated Betelgeuse distance from just this week
Nice touch
@@AxxLAfriku what
Two types of youtube comments.
@@rubi-blythin8885 just always mark this guy as spam
I can't believe there's actually a star pronounced beetlejuice
Pog
Made more difficult by its spelling Betelgeuse
I’m so glad there are people smart enough to know what’s going on when they look through a telescope lol
Why ?
So they can tell dumb people like me about the blobs of light I’m looking at
But do they I wonder.
@@joeblack1126 there’s probably a bit more speculation than they’d like to admit 😜
@Waldel Martell I don't agree. If they had smarts and discipline, they would already be something worthwhile .
The more we learn, the crazier the universe becomes.
we dont even know how deep our oceans is, let alone the Universe where everything doesn't make sense
@@ViperDivinity Except that it does
@@ViperDivinity The earth's deep sea is denser than you think, it gets dark every time you go deeper in water. It’s also like being in space but in water, you can’t even see, It’s like being inside a huge fog. So it’s hard for scientists to explore and find new sea creatures.
Edit: My comment was confusing. So basically Earth’s deep sea is much more like space but it has an end and it is much more dense. once you enter a zone where no light would no longer could reach; you could experience very much pressure. And the thickness of fog made it so hard to see; it could be hard for scientists to search for creatures.
@@kxufa4507 our ocean is basically space
It's not so much that the universe is 'crazy'; the universe is what it is - and is absolute truth. It's more that it's beyond our (humans') realm of understanding...kinda like an insect trying to understand calculus. We're making progress tho.
Happiness is seeing Veritasium’s new upload notification.
yes
Do Veritasium have merch? It's the best educational channel. ❣️
Actually, its chemical reactions in your brain...
Simp
No its vsauce.
this makes me think about how lucky we are in the universe, we have perfect solar eclipses, we have a bunch of planets in our solar system, and we got a perfect view on a duplicated supernova and its host galaxy to go with it.
I can't believe how you get all this information, and how you teach it so well
there are multiple people that work at
Veritasium and that spend hundreds of hours doing research on this sort of stuff and making sure it is correct
Not lucky. Blessed.
i think it was Robert Jastrow who said 'The Universe Knew we were coming'. it has been said we live in 'perfect real estate!'
Douglas Adams, the water pounding fallacy. ;)
@@fhz3062 whats that about, is ther somewhere i could read about this fallacy?
This absolutely blew my mind. I expected nothing less from you, Derek. Thank you for everything you do.
Watching Veritasium convinces me that nothing is beyond our human capacity to understand, and that I understand so little of it. It is humbling, encouraging, mystical, logical, frightening, and comforting all at the same time. It is a wonderful universe. It is a wonderful channel.
Thank you.
Thank you for your comment!
yes, there is a thing that I strongly believe humans could never understand, quantum mechanics
Another existential crisis for a week 😛😛😛
Given a very large amount of time, we'd eventually understand things - but how long would it be compared to a single human lifespan, we just don't know, and some things would likely remains not understandable when you die.
Still, it's possible to fall to the cracks, and that day will have to wait a bit longer...
th-cam.com/video/5hVmeOCJjOU/w-d-xo.html -> interesting talk from Sean Carroll (the idea once featured on Veritasium's channel as well).
I watch these videos now with renewed excitement and interest. I finally started at University of as a Physics student after years of watching videos by channels like this, which eventually led to my passion developing to the point where I had to take it more seriously. Crazy to think that, despite officially leaving education years ago, TH-cam channels like Veritasium would take me back purely out of a genuine interest that I never felt for any subject when I was actually in school. The point of this comment is to say thank you for the inspiration!! And to keep this sudden flood of videos coming! :D
Bless this man, he's putting out so much quality content for us
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
So basically, every moment of every day is echoed through the eternity of space time, for all eternity? That’s pretty friggin amazing. The observable light that reflects from us out into the cosmos never goes away. Yeah I don’t feel insignificant or anything lol
Extraterrestrials in other galaxies be like, "Meh, I've seen this TH-cam video back in 1995.
How can you feel insignificant?! You point it out so well yourself -- eternal echoe. My dude, you're existence is permanent and forever. That thought makes me feel way more significant despite the size of this big place.
No one is insignificant compared to the universe, think of it like this, we are part of the universe, the universe is part of us and we are part of the universe.
You are insignificant if nothing will ever know of or acknowledge your existence. If your existence echoes throughout the universe, how could you possibly be insignificant?
@@jamiehosmer1481 well.. yes and no… although we are echoed throughout all of spacetime, isn’t there an end to the universe?
Or at least the 4 proposed ends that astrophysicists have come up with? so is it a finite echo then, rather than an infinite one?
My 5 year old nephew loved watching this, he had an endless list of questions for me during & after lol.. He can't even sit for 2 minutes for his online kindergarten classes but he can sit still through this entire video.. Well done man.
I am a student in 9 th standard
I wasn't much interested in science until I started seeing your videos , I think it's been a year and a half since I saw your first video .
I was so satisfied that I started watching more of them and in no time I found my perspectives changed.Science had become my favourite subject especially physics .This happened just because of you.I would like to thank you from the depth of my heart for that .I feel now that I have an option to pursue in my life ahead as a career, in science and now I am hopeful for my future which I wasn't earlier,perhaps.Thank you so much sir!
Please continue making videos on such topics .Your way of explaining topics is better than any other channel on you tube as far as I know( perhaps better than even my teachers). Really appreciate your videos !!!!!
I'm a random science guy advice: only science education could change our probability of survival! Now it is most probable that we're gonna extinct! Great you got the right way, encourage others who can't never tell your friends to take what they want, tell them to take science, I'm too from India and ya you will discover that how wrong are RELIGIONS are how wrong are the things we were taught... enjoy...
@subrat verma Same as you I too developed interest in Physics because of Derek and Michael Steven(from Vsauce) and I am really grateful to these guys. Best of luck for your future. And btw I am from India too :)
@@varunahlawat4863 You are absolutely correct
And besides that we are taught things that assume only historic Importance nowadays. For e.g. I am being taught gravity the Newtonian way even today it's been more than 100 years for General relativity
But it's mentions are not till high level university courses in India. So that definitely something wrong with the education system
Thanks for your reply!!
@@Musiphymatic
Thank you very much bro
V sauce is also a pretty good channel, I really like that channel and apparently I got to know of Veritasium from Vsauce's Lenz'law video
Both the channels(V sauce and Veritasium) are equally good and perhaps the best online learning sources
I still giggle like a kid when seeing your videos like I used to 10 years ago. There's something so beautiful about understanding the mysteries of the universe. It's almost poetic
It is so refreshing that somebody not just asks more questions, but answers the ones I was never even asked, but always wanted to know!
Teacher: “don’t worry, angry eye smiling stars aren’t real, they can’t hurt you”
Angry eye smiling stars: 3:47
I like to imagine it as lasers coming from the eyes of a distant supermassive alien
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
ratioed by smiling stars 6:28
this actually made me laugh so hard
hahaha
What I learned from this video: Cosmologists are smart AF.
Yes
Me too.
Astrology is amazing
@@popazo8556 this is astronomy not astrology
@@popazo8556 tf
Spacetime be like: But, will it bend?
but can it do this?
b-but the fundamental theorem of astronomy is π = 1, h-how can astronomers measure things so p-precisely?
Bends so hard the strings might break
@@samovarmaker9673 fr? π=1? Here i thought π=3 was bad enough
Surely djent
That closing remark beginning @11:36 is amazing. I had to go back a few times to listen to that. “What is contained in those distortions is information about the workings of our entire universe.” It’s really amazing how we can see so far away and glean bits of information.
"A star might die only once, but with Einstein’s telescope, if you know where to look, you can watch it scream forever."
Well, that's not at all ominous or creepy!
True poetry! This is the most underestimated comment of the month. Thanks for the chuckle.
scream ? why screaming ? It's just a ghost dancing in grace.
@@the_real_vdegenne Violently exploding isn't graceful
So this indicates that multiple generations of aliens would see me getting rejected by my crush. Interesting.
Eh Branimire branimire
I can just imagine the aliens watching us getting rejected and thinking "ha, noobs"
Not only that but Aliens millions of years from now
not if we nuke 'em first
@@coolmarkyt lol we've already been talking about nuking mars 😄😄😄
Derek: How many Veritasium videos you want this quarantine?
Me: Yes!
There is only one veritasium video. You're just seeing multiple versions through a gravitational lens.
I have to report you twice because you violated 2 of the guidelines please in the future don’t do it again
What does his channel name mean ?
@@TheSecondVersion Hahahah nice one
@@takeizo An element of TRUTH
What a great description of gravitational lensing! I'm just an amateur astrophotographer and have managed to image the "Twin Quasar" with my equipment, but I could never quite understand how the lensing produced (in that case) TWO images rather than some other effect. I think that I now less confused than before, so yay!
Yeh right! When I look in ze mirror, I don't see two reflections do I?
Oh.. wait..
@@therealKINDLE a lense, and a mirror are not the same.
Me: *shrug* Can't we just call it roughly 70km/s?
Joseph Silk: It is a possible crisis for cosmology.
Astronomers: ye ±10000 years
Also Astronomers: NO ±1 IS 🚫🚫❌😤
(but ye, the consequences of having such large range of values is that anything to do with a tiny difference in rates and changes will balloon up and really grow dramatically when used with real data values, that the error margin is as good as saying a human lives on average of 1ms to 2*10^14 years.
If we are taking a rough estimate, I would suggest 69km/s which can be called NHC or Nice Hubble constant .
@@rancidalankar1322 big brain
@@rancidalankar1322 noice
@@rancidalankar1322 - the Hubble constant is variable in time because in different regions the strength of the dark energy is varying with the density of the virtual particle activity in that region.
Man: No one bends like her
Universe : Hold my gravitational Lenses
lol
Hahaha one of the best astronomy jokes I've ever heard
Bazingaaaa
itna dimag kaha se late ho
Not lensing. It's refraction from changes in plasma density.
Me everytime I click on a Veritasium video: Easy peasy. I'm know it all
Midway through the video: holy moly, wtf did I just hear
The appearance of technology and knowledge related to photography when it comes to cutting edge science is something that amazes me.
BRO YOU'RE CRANKING VIDEOS LIKE CRAZY!! HOWW?
Two things: I've got a team now, and sponsor deadlines haha
@@veritasium awesome!
@@veritasium ur amazing
@@veritasium and you'll always have our support too
On behalf of your subscribers
@@veritasium hope that you are alright though.
6:27
the galaxy is smiling at me im uncomfortable
:)
That's so true
Looks like Walmart is about to slash prices in a galaxy far far away
:)
@3:47 is even more lol
I watch these videos & I wonder how tiny we are & how short a period of time we exist..yet every problems that we face seems so big & significant in such a short period of time we live. These space videos makes me forget every pain that I have..😊
We are but an ant, many times smaller than the things above us.
I never heard someone pronounce Betelgeuse as beetle juice tbh
Same
And I've never heard someone pronounce Betelgeuse any other way than as 'beetle juice.'
@@Amberscion like rlly who tf named that
@@yea-00 The natives of Betelgeuse, of course. And you should hear them laugh about our planet's name: "Y'all call it Dirt? Really? Bwahahahaha!!!!"
Battle geese?
One of the most impressive pieces of astronomy work I have ever seen, to actually come up with a testable hypothesis and have it confirmed is science of the highest quality.
Well that's literally how science works. You make a prediction, then you make an experiment to see if the values you get from the prediction match the experiment values. If they do, your theory is probably correct. Every once in a while, your theory doesn't predict the outcome of a specific experiment, and the science cycle continues... At least that's how I understand it
@@shinji906 Yep, but how much of "science" is really _science_ then? See now why I am impressed?
Hey Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
@@thearchetype9829 I'd rather see a video about this idea and what possibilities it opens up, dsmatthews.blogspot.com/2020/04/covid-19-solution-changing-rules-of.html
This is nuts. The split image of the galaxy really appears that far away from the original.
@RITA , I LOVE SЕХ , WANT SЕХ !!! OPEN MY CANAL !!! no
They are actually very, very close together in the sky. The light is deflected by a tiny angle, and you would not be able to distinguish it from single source by eye even if it was bright enough to be visible. Hubble, however, has an absolutely incredible zoom, allowing it to take a region of space that would look to you like a single point in the sky and expand it out to show all the galaxies and clusters of galaxies that are there.
All I see at 6:24 is a happy-faced smile.
Smiley space 🙂
:-)
3:46 as well
I see a demonic Koolaid Guy.
@Shinay
You're the type of person that wakes up on a Monday morning and immediately takes to insulting people on social media...
Your life sucks, but not as much as your syntax.
I come to TH-cam to watch the British GP highlights and now it's 4:19am after a couple of vids from this channel. Fantastic stuff
So cool.
Have to agree.
Shouldn't you be solving puzzles of something?
Heeyy Red I really miss your cubing videos
Lmao, of course you're here
OMG I remember you from when I was a child! I use to watch your unboxing videos everyday! You got me into cubing when I was around 9, but I've stopped. Now I got to find my collection of cubes lmao XD
If a supernova is as bright as the moon, maybe that’s why some old paintings had 3 suns/moons in the sky. One of them was a supernova that was there for their whole lifetime
I think if 3 moons would have been in the sky for a whole generation as you suggest then that happening would have been historically marked somewhere. In other words, we would have know about it
I don’t think it could maintain that level of brightness for more than a few months at most.
10,000-20,000 years ago.
The earliest possible recorded supernova, known as HB9( also known as two sun's), could have been viewed and recorded by unknown Indian observers in 4500±1000 BC.
In 185 AD, Chinese astronomers recorded the appearance of a bright star in the sky, and observed that it took about eight months to fade from the sky. It was observed to sparkle like a star and did not move across the heavens like a comet.
That was one of the most interesting things I've seen in TH-cam. Gave me goosebumps. Especially the fact that it was seen in different times.
Your videos are so fascinating, Derek, that I forget about my duties. Great, high quality content and your professionalism in each episode. Waiting for more cosmic news from you. Lots of love...:)
You shouldn't need to change your thumbnail and title to optimize the video for the algorithm, TH-cam's algorithm needs to be changed. There was so much information packed into this 13 minute video, it is insane to not watch this video. Great work, keep it up!
wow they named a lotta things after this “einstein” guy. he mustve been smart
yeah, but he probably plagiarized a lot
@@pewds6910 Someone clearly has no idea who Einstein really is and what he did...
Or just creative and persistent
@Nirek Setty st1 - modest too and loved beer apparently ;) Barman! .. yeah ok, I'll do the same.
Ong yean yen is smarter.
Quality content like this deserves "TH-cam Tenure." I couldn't imagine a world without Veritassium.
If even half my teachers could break things down like you do with said enthusiasm I might of wanted to learn a whole lot more when I was in school. You really do teach people alot.
is it actually worth then joining some top astrophysics clg
cuz I have to finalise my admission
I love space...but not the education sys
I wrote about this for a school project two years ago! But even though I already knew about this discovery, your visuals and explanation were still super infomative! I can't believe I just found this video.
The fact that a 14 minute long video passed this fast is amazing🔥
I know right... fourteen minutes is foreeeeeeeverrrrrrrrrr....
Thats an example of relativity lol
@@GGoAwayy Nah, I have watched an hour long videos on things like these. But the 14 minutes didn't even feel like 5 minutes!
@@austinwolfe7295 Lol
Must be caused by some kind of bend in spacetime.
Looks like Arthur C Clarke got it right when he wrote:
"It's full of stars." in 2001: A Space Odyssey
That lensing effect must make a tricky job even trickier! 🤔👍
This video has everything! Gravitational lensing, dark matter AND expansion of space-time!!! I am now hyped!!!
ugh man I never want your content to stop. especially when it's about SUPERNOVA
Man, this is truly awesome.
It blew my mind and made my day.
Thanks for sharing those informations with us !
Oh i'm french and I believe you speak french, donc merci beaucoup Dereck, c'est incroyable que l'on soit parvenu à faire ça ! Ça motive à se lancer en astrophysique !
I'm always astounded by how smart some scientists are. Especially physicists. And here I am, frustrated by my excel shenanigans...I think I still have a looooong way to go :c
EDIT: Thanks for the supportive comments about my excel frustration :D you are very wholesome :3
Mathematicians are arguably even smarter, but you need to work hard just to appreciate that. Physics' connection to reality gives it ways to get popularized.
I’ve struggled with Excel a lot also :) (and I sign the H0 paper cited in the video) - so dont despair!
To be fair science has had to literally change around excel's stupid bulshit.
Yeah, Excel can get headaches even to bright people. I work in a membrane laboratory and it is pain for all of us.
@@vivianmiranda1986 that great seeing y'all people gather here
I'm amazed how they can accurately measure so many things at such great distances. Its mind boggling.
It's just mind blowing how much information scientist can extract from those images!
Gravitational lensing blows my mind.
"Oh, those four galaxies you can see over there? Yeah, they're the same one..."
Madness.
It's crazier than the looks. It appears not only in different locations, but different times. It's really mind boggling
@@Zalamedas It's not just looking in the past, but you can choose which past are you looking at. 20 years, yet lightspeed. What had it got to go through...Fascinating.
Awesomeness.
The time-dilation measurement blew my mind
It’s mind boggling that we have people who believes that Earth is flat and only 6000 years old.
And what do you think it is? Cube that’s million years old?
@@Wu-Zi-Mu he is trolling dude
That's absurd, Earth is only 5000 years old !
The Bible tells us it is around 6,000 years of course. Around 2,000 years from Adam and Eve until Noah and the flood, then about 2,000 years from that until Jesus Christ died on the cross for our sins, and about 2,000 years from that until now. And if you think that is just a story, then why do you think the whole world uses the time frame of B.C and A.D? The Bible lists the genealogy from Adam and Eve all the way to Jesus Christ, so you can technically add all of that time up plus the year it is now and it will be around 6,000 years. Oh and also the Bible states that the earth is round.
I was introduced to this guy cause of the gravity video last week and I have now watched almost all his videos (Great content)
HEY VSAUCE, MICHEAL HERE
Sure you were
Welcome friend 😃
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
Incredible . I was awstruck to know your version of sky as a transparent lens thereby giving multiple images of the same object ..a supernova.. hatsoff to you..Derek
“ objects may be closer than they appear”
1:40 "In the next
hundred
THOUSAND
years." :(
An eye blink ...
Also the music stopped lol
That caught me off guard
But that could still be sooner rather than later
Like he said, it's hard to predict. It could happen tomorrow.
I feel as though I actually understood this. Please don't ask me to explain it.
explain it.
But if you can't explain it then you don't really understand it? According to Einstein anyways. (Don't worry though, I don't really understand either!)
Please explain it
if you can explain it then you really understood it
The gravity slows down the light. The light went in all directions, there were 4 lenses that redirected light back to us. We knew there were 4 lenses because the galaxy appeared in 4 different places. We saw the supernova in one of those places, ie from one of those lenses, then another, so we figured it's gonna appear the other place. somehow we figured out how long the delay was (maybe looking at how out-of-phase the rotation of the galaxy was in each image) and we added that to the supernova we saw to figure when we'll see it in the last image.
@veritasium how'd I do?
"How fast are we expanding?"
Judging by the amount of tacos I'm eating... We be expanding fast
good analogy my friend....laughing emoji
expansion
i dont understand any of this.
but i see a smiley face at 6:31
thats god looking back XD
XD
Meme lord
🌝
This has to be your best video. And I feel like I’ve seen a hundred of your videos over the past decade
When you see the same object six times and each image is in different time.. just mind blowing!
The fact that's it's 6 gets me... could be any other number. Couldn't it?
@@zmanwithfire yes, depending on what and how many super massive things are between us and the object.
its things like this that make me feel like the universe *wants* to be understood, by giving us all of these juicy hints full of information and challenging us to decode its message, revealing a little nugget of truth as a reward. that, or our brains are really fine tuned for living in this universe, to the point that we’re able to find answers from seemingly random stuff because of how great we are at recognizing patterns
damn I didn't know this "Einstein" dude was so famous, his bagel shop must be booming
I cant believe it, every time there is anything sciency in film they say quantum or hardron or something, why dont they just use this einstein guy
@@filipbitala2624 quantum and Einstein? lol those 2 things are polar opposite of each other.
This guy can convince me to take the blame of crimes i didn't even commit.
Fr 😂😭
🤣🤣🤣🤣🤣
i smell BL
You commited it, the information is just delayed by gravitational lenses.
This killed me, it's so true
This is incredible validation of the theory.
I have watched this video multiple times and every time it gives me goosebumps. "For stars, 100k years is a brief window of time but for us short-lived humans it is forever."
That is the most beautiful thing Ive ever heard about the universe. It makes it even more mysterious and teaming with possible adventures for my scifi novels.
I just wish i could see betelgeuse goes supernova in my lifetime. It would be a spectacular, never forgetting moment.
Imagine how most people would probably freak out and I would be like "it's beautiful"
Watching beetlejuice supernova is definitely a strange sentence, but I guess that's just how it's pronounced
Same.
well it could happen in a million years or it could happen next week
@@skyebluesilly or the next day
My mind is blown. This is like a real life instant replay.
Thanks, man you explain such a complicated things in such an easy way that even an amateur can understand all
TH-cam is getting comfortable with two ads in the beginning
Too comfortable 😂
Get TH-cam Vanced on mobile or ublock origin on web
Because the userbase is getting comfortable with two ads.
Get an adblocker bro
What exactly is the purpose of many people repeating this same comment?
" almost perfectly line up with where the earth would eventually be" i feel mindblown
Although, the universe is just so vast that gravitational lensing is not a rare phenomenon at all, relative to Earth or perhaps everywhere.
Serendipity.
Lightning strikes are rare to predict but happen all the time
With all the stars out there, the myths plays out that no matter how rare an event, it will likely happen, eventually
I know right? this happened before the earth even existed and yet they can see it by looking back in time through the universe. It really is incredible.
Me: reads your comment at 5:36
1:43
He had us in the first half ngl😂😂😂
I could get my crush any day now! ..in the next few hundred thousand years :(
VeryCool stuff! Thanks again for making these videos. It seems harder to get this kind of info since Discovery channel went all Naked and afraid and ghost hunting but we still do get accurate information about how many crabs can fit in a boat and that Pirate Captains dont really leave their gold behind. There is amazing amounts of new discoveries that youve let me in on and now that crazy James Web Space Telescope is gonna fly soon, Im overjoyed
I was told, "if you missed an event you cant capture it again."
That was Kodak's fear propaganda campaign used to sell more cameras.
Unless if you are trillions of light years away from where that event occurred.
@@irfanjames you mean travel ahead at the speed of light so you can watch it again?
jokes on him i can see a sunset 3 times if im in dubai
Well, you can't, not even once, as all you really capture is electromagnetic echoes of the event, but provided you are at the right spacetime you can see other echoes of the event :D
Jeez you really did just blow my mind! Its great that you are bringing these incredibly complicated subjects to an younger audience aswell. I would probably never stumble upon this if it wasnt for you.
I really do adore this channel probably the best science channel ever made on youtube
Vsauce: Am I a joke to you?
Vsauce 2: Are WE*?
Yes they are 😂
@@prastarkumar6889 lol thats who i thought of first! Vsauce is how I found the science and education side of youtube and i have fallen in love ever since
Well this and PBS SpaceTime.
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
An AGN could also have “time stamps” in it’s spectra that can be used to differentiate the light paths in a multi-lensed system. There’s an AGN in the northern hemisphere (I forget its name) with two distinct images that differ in age by a little over a year. Neat stuff.
Today i learned betelgeuse was pronounced “beetlejuice” 😂
Do NOT say it three times!
@@rafijaxsen7227 otherwise it will go supernova
Bettel goyzer
Astronomers couldn't even get its distance correct within 25%. I highly doubt many of the other measurements they publish.
Scientists are on top of their meme game
This is one of those videos where I went really violently back and forth between understanding and not understanding this video 😂
Same
These scientists are so smart I’m doubting if we are the same species
scientists are very smart but you have to realize that you got this explain this to you in 13 minutes while hundreds of scientists spent thousands of hour doing the math and the research for this data.
they are but standing on the shoulders of giants
They are very focused, as it were. Not quite the same as being super smart. Trust me! I'm a scientist.
@@luminography very true im not a scientist and I have a long way to go to get to my full ability but hard work always pays off
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
Thank you so much for this fascinating episode . I am hooked
My mind bent trying to grasp how immense the lensing must have been to produce a 20 year delay. With light traveling at lightspeed. I mean, come on.
If I understand correctly, it doesn't need to be immensely lensed, it just needs to travel through an immense amount of space in an immense amount of time. Both of which the universe has plenty of. The lens just has to deflect the light slightly and let it run for billions of years. But then, for two different paths to have such different travel times, at least two separate lenses would be required?
Well, the streams of rays out of the supernova took a path that was longer by 20 light years
It is not really that immense if you think about it. Don't forget we are billons of light years away. Think about rays originating from a single point, even if the initial deviation between the rays is very small, as they continue to travel this deviation becomes more pronounced.
@@VioletGiraffe I think it's just because on such a big scale, a difference of 20 light years in the second image's curved path is not a lot, proportionally. Like the radius of the circle (or whatever) that fits that curvature is immense, and so is the distance from the supernova to us
@@VioletGiraffe The gravity from the clusters is pulling the light from different angles, which create different travel times to earth. He explains it well here: 4:29
I like this new trend of you uploading videos more frequently, Derek!
Simp
Yet still high quality. To many creators have started crapping out daily vidoes just to make TH-cam's algorithm happy. Derek shows that you can make a successful channel without clickbait vlog tactics.
Veritasium you can make video on SERPINKI'S triangle
The same as one I have made CREATE SHADES USING SIERPINSKI'S TRIANGLE AND YOU SMART PHONE th-cam.com/video/DMYn_0uTVB8/w-d-xo.html
“A dying star in a galaxy far far away”. May the force be with you ^^
Whenever i feel like i need to know more about the universe, i check this channel !