Galaxies Don't Rotate The Way You Think | 4K
ฝัง
- เผยแพร่เมื่อ 15 พ.ย. 2020
- Galaxies are not spinning tops. So how do stars move within them?
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What really amazes me, as a 64 year old, is how much we've discovered about our universe in just a relatively short time!
Thank you, Alex. As always, your videos make learning about space easy and entertaining at the same time.
I heard that the late US Senator John McCain's mother died this October at 108. She was alive during the Spanish flu pandemic! Is that nuts or what? A remarkable family, she had an identical twin sister who lived to 99. father to 97, and mother to 87! Maybe not so nuts???
I'm only 4 years behind you and I can't keep up with everything I want to know. Plus, I grow more fascinated with science history year by year. It's a losing battle!
@@FlyingSavannahs So true- it seems our scientific knowledge is increasing exponentially every year!
Although the internet has a lot of drawbacks, (as I'm sure you agree) it has the benefit of making access to this knowledge much easier.
It's also great for keeping the mind healthy!
@@adventureswithdogs2251 ✔️
A stack of years old
Cool Boomer, a very rare appearance
*"This video is brought to you by Geologie"*
*Me, half paying attention:* No I'm pretty sure it's brought to us by astronomy
U know u want summa dat' :[) LoL
Sheldon?
LOL
ASS-TRO-MONY !!!
Nah! Astronomie produces dog food.
Millions of bright, hot young singles near you.
Some may be dwarfs if your into that kinda thing
I’m just looking for a black hole
@@DragonOfTheSkies I want to find brown dwarfs
Where the light certainly never shines.
@@synq-_-8595 Just make sure Uranus isn't emitting any gas clouds
Imagine standing on a planet within the inner galaxy and looking up at the night sky.
Get Elite:Dangerous and fly a ship to the center of the galaxy and land on a planet. You will see how epic it looks.
Isaac Asimov’s Nightfall.👍
It would look generally the same, a bit more stars but thats it. The number of stars we can see in the night sky is a INCREDIBLY small fraction of the stars around us (relatively) in the galaxy. The sphere of stars that we can see in the night sky would be a minuscule dot on essentially any rendering of our galaxy. This region is about 20 light years in radius... but our galaxy is roughly 100,000 light years in radius. So the region is relatively incredibly small.
So in the inner galaxy, there would be more stars in this small region but thats about it. Although there are vastly more stars in the inner galaxy, the increase in the amount within a 20 light year sphere would be more, but not so much more that it would look different.
And you also might think well these stars are going so much faster, thus the stars positions wouldbe changing as well. This too, would not happen. Yes the stars are orbiting much faster in the inner galaxy, but the reason the stars in our sky stay fixed is because all those stars we see are local (within the 20 ly radius) and thus are moving WITH US around the galaxy at generally the same speed and direction. So just as the cars in a formation lap around a racetrack dont move relative to each other because they are all going the same speed, the same is true of our sky and the stars positions in it remain constant, at least over thousands of years.
This would be true of the inner galaxy too, although faster, the relative speeds are still similar and thus the apparent positions of those stars would remain seemingly fixed.
@@Ddub1083 One small change. The stars even in our local area are still moving relative to us. People just don't realize how long 250 million years really is. Try drawing a really big circle on a large A1 paper. Now divide it into 250 million sections. Yea, not going to happen. A single dot of a very fine pen would already be more than 1 or even 100 sections. So the stars are still moving, it just takes far longer than our lifetimes for it to be noticeable with direct observation.
Or imagine being in a rouge solar system (if there is such a thing) that has been ejected from its galaxy, and having the galaxy fill your night sky.
Alex, in the end of every video: "So, there we have it..."
Me: Nooooo
Every time, it ends up with me abusing the reload button. Thank you Alex. It's always a pleasure watching your labor of love ❤
😵😒 Brain explode....
lol
That rotation diagram forming a 3-dimensional shape was reslly eye-opening for me! I feel like I understand it for the first time.
This channel is really amazing. I bet you've inspired a good chunk of the next generation of space scientists and explorers!
@@S4LC-03ChanNgoLam-qs9ho just remember, if it's what you want to do, your motivation will make your journey so much easier! I'm rooting for you!
He’s motivated me make my channel! 😄
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but school can’t lol
the universe is so incredibly beautiful. in high school i didn’t have a single class on astronomy (don’t know if it’s different in the us or elsewhere) so i had to do all my own research and i’m so glad I did. what a magnificent mystery we are
Same
"We've been tricked, we've been backstabbed, and we've been quite possibly bamboozled."
y, but only by the 'skin care'
i was thinking 'only 8 minutes'? you crammed a lot of info in 8 minutes! gotta watch it again.
so true
*6 minutes 15 seconds
@@qreeves exactly
Nah its probably they go straight to the real thing and not slowly speaking that a 6-8 mins vids turned to 12-13 mins vids
This is one of the best channels on TH-cam for me. You can clearly hear your enthousiasm and love for astronomy in your voice, all the while being perfectly clear and composed. This combined with the most beautiful pictures the universe has to offer make for a very enjoyable experience, even if one is not very interested in astronomy.
The best part about the video was to know about the 'rule breakers'. So intriguing and fascinating! They are cosmic rebels 🤘. They break rules at astronomical scales 😆.
The best part is, when we discover something new, the universe let us make the tool that we need to know it further using the discovery itself.
wow has that "yooooo" mirror guy on tik tok heard this one ?
I still have a hard time letting go of, “Dark Matter and Dark Energy are just excuses for something more logical that we are missing or don’t quite understand yet”.
The reasons they list for why Dark Matter definitely exists, are pretty convincing. Hoping the James Webb telescope is going to reveal revolutionary insight, like Hubble did.
I still think "dark matter" and "dark energy" it's just a crude explanation for their (human race's) complete lack of understanding. They can't find any of these particles that somehow make up 97% of the universe.
@@bwxmoto That's pretty much how it is at present. How would you characterize your knowledge about an animal you've never seen directly but have found the nests that it makes, the food it eats, the traces of where it travels, and what sounds it makes. Now draw a picture of what it is!
Tricky, that.
@@FlyingSavannahs In that analogy they would be talking about ghosts and how the ghosts move things around your kitchen at night. They don't even know if it's an animal in that analogy, and the nests it makes might be things the earth or wind is doing and not an animal making the nests at all. But then they proclaim boldly it is an animal. LOL. I'm not buying it.
Dark Matter exists. That's just what we call it. They just don't really know how it works. They know it's there, but not much about how it functions or what it actually is.
@@w0y4k15 They don't know jack about it. They say they know it exists. That's what I am calling into question. I know all the studies and explanations. I have seen the evidence. I have even seen how it affects light as gravitational lensing appears to go through clouds of dark matter where there is very little actually matter inside the clump of dark matter as it travelled through another galaxy. I still think they do not have a clue about what it is or even if it exists at all.
Omg that was one of the best explained videos in galactic dynamics I have ever seen, 100000/10!
I'm waiting for the day when we will learn about the true nature of dark matter and dark energy, and unlock more and more mysteries surrounding them ❤
Negative mass .
Yeah, lets hope the breakthrough happens in our lifetime. What a great time to be alive, when science discovers new knowledge everyday and we could follow the development with a touch of our finger.
This and interstellar travel. Man, I really wish to see images from other solar systems in my life time.
I think Alex will figure it out and explain it in an upcoming feature video in 2021!
@@eddiebrown192 Actually negative mass would defy the laws of conservation of energy because of the way it would interact with gravity. Negative mass would be propelled by positive mass, as it has reverse gravity, but positive mass would still be attracted to it, so the two would essentially chase eachother down at an infinitely accelerating rate, creating infinite energy, which obviously isn't possible. This is how its known for a fact that negative mass can not exist is any way. Unless the laws of thermodynamics are completely wrong.
I can't help but watch every Astrum video more than once. Such a great channel. Best vibe and narration of any TH-cam channel I know.
Good one, Alex! Galaxies are fascinating macro objects with their own emergent qualities, and we still have so much to learn. The future is exciting.
Great video. Extremely informative and interesting. And the correct spelling of the English words used in the annotation did not go unnoticed either. You acquired a subscriber.
I can’t tell you often enough how thankful I am you speak as a grownup talking to an adult whose intelligence you respect, and not the typical spastic child who feels compelled to turn everything they say into another clever catchphrase (you may know these people as “TH-camrs”). How ironic is it that the worst thing about TH-cam is TH-camrs? The internet would be a better if more people took a page from your book.
Nice video brother! I've been watching for a long while and I always enjoy when you have something new on your channel. All the best!
It is really interesting to me that everytime scientists see something they can't explain or that breaks the "rules", it was always hit by something very large without leaving a mark or trace.
It's easier to squeeze something into an existing model as an "anomaly" than it is to rework our model to perfectly describe our universe. Baby steps
This was tremendous, multiple ideas that I've never heard before AND skin care tips! Seriously though these videos are a valuable resource
To all the comments that go something like, "Hot young singles near you", most stars actually form at least in a binary system, many being up to 6 actually, so all the young stars are polygamous then later become "divorced" so they aren't really single.
That's fascinating. For the binaries, are they so close that both stars would be considered in the same solar system (like within a hundred AU of each other or so) or much more distant, so that each has its own distinct solar system?
But they become single
@@rustyshackleford9475 well, they're not young anymore
Thank you for this. I have long wondered about the rotation and appearance of spiral galaxies- you have confirmed my thoughts in this video.
really nice video, i love the atmosphere you´re creating. it´s not just dry scientific facts, but just the right mix of calm but positiv background music, your voice, and pictures. thank you for the video :)
The fact that you can hear him smiling as he narrates really makes this channel as good as it is.
People: "Galaxies rotate counterclockwise."
Astrum: "Wrong."
Annoying nit picker: from where are you looking at it?
How beautiful to imagine our world spiralling in an interconnected dance through our cosmos.
When I open myself to this greater possibility, it fills me with joy and wonder. Thank you Alex.
0:33 i think Messier 51 might be my favorite galaxy to look at.
Really good video. You made this really approcheable. Thank you.
As always, fantastic video with incredible visuals. Thanks!
This video is a prime example of why I subscribed. Thank you.
This is tripping me out. I can only maintain my understanding as I'm watching the video 🤣
Alex your voice makes understanding alot easier it has that unique curiosity influence thanks for the videos. how many light minutes,hours,days or years are voyagers in space now?.
Seriously, these were the thing which were wondering in my for an year. Now you have cleared it. Try these topics more.
This channel needs more popularity, stat. I love the narration and information!
While I am, in theory, somewhat aware of how we measure the movement of stars or other light sources, it's still fascinating that we could take pictures of those galaxies for probably hundreds of years without noticing any visible changes due to the vastness of space and the relatively low speeds involved, yet we can with reasonable accuracy measure speed and direction of those objects...
System of nature is vast for us, otherwise tiny. So life form may complete its era without noticing these changes. But life form is human perspective. Everything is alive or dead. If you want to notice these changes, you can do so as a star, planet, etc.
- please, make a video about alcohol galaxies/clouds :))
- where are they now: The Voyager Golden Record, Tesla's roadcoaster, and various objects we've launched into space
- update on Tabby's Star
The music and visuals are so soothing.
Thank you I don’t mind the Ads gotta make ur money 💰 also. Thank u for keeping it till the end.
Amazing video as always! I always find it amazing how large galaxies are
"Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space." ― Douglas Adams, _The Hitchhiker's Guide to the Galaxy_
awesome video ! It is hard to accept that some are rotating in direction the arms are pointing, just does not seem right. Interesting though, I always thought when I saw one in a documentary turning this direction it was just inccorect graphics, but I can see how other galaxies could interact and cause it.
thanks for the video!
Fascinating and thought-provoking, thank you!
Beautiful photos and representations of space. Love this stuff.
"would it surprise you to hear this is totally wrong?"
no, cause i saw the title before hand
profeser
Smort
SON: Dad, what's a spinning galaxy?
DAD: Something that Samsung has been trying to do for many years.
kirby march barcena that doesn't even make any sense.
@@jimmyshrimbe9361 It does if you know that Samsung manufactures a tablet called Galaxy...
Kirby- I have the 10.1 tablet that I sometimes rotate 90 degrees on the vertical axis to switch between landscape and portrait. Does that count?
@@adventureswithdogs2251 A rotating screen should be 360° just like a planet that spins on its axis, right?
@@kirbymarchbarcena It was an attempt at humor. Don't overthink it.
Astrum please do more Uranus videos it's my favorite planet and this is the only channel that peaks my interest
Very interesting! Loved the subject! (as always)
Love your work. Love from India.
They see me rolling they hating
😂
They should pin your comment
🤣🤣🤣🤣🤣🤣🤣🤣🤣
That was pretty cool, thanks mate
Awesome and informative video. Thanks for your time 😁
I wish my conscious self existed forever so I could feel time like stars do.
It does ur soul exist forever
Recently Voyager 2 has discovered that the interstelar medium may be far more dense than previously thought. Dense with electrons they think. this could just be a denser region just outside the sun (and probably other stars). However if the interstelar medium really is up to 10 times denser than previously thought, couldn't this go some way to explaining dark matter theories?
This is a brand new discovery so I ask this question retorically.
(what's more if this extra matter is only electrons, couldn't static charge have a role in internal galaxy movement as well?)
Amazing. Great video! Thank you!
Thank you, this really sparked my curiosity to learn so much again.
1:40 if you’re feeling bored, pick a dot and follow it it’s fun
New Astrum Vid!
Great video Astrum, thanks. 😎
Pausing while the galaxy rotates is so trippy
And just the density waves in general are trippy asf too look at
Do they have an idea of how long it takes for a galaxy to complete a rotation? What are some examples of galaxies that have lost their definition? Love your videos!
Broaden your perspective. System of nature is vast for us, tiny otherwise. So that life form may complete its era without noticing any changes in cosmic system. But life form is human perspective. Everything is alive or say dead. If you want to notice these changes, you should be as huge as a star, planet, etc. For us, their movement is seemless, dead slow and even still. But this is not important.
In ancient era, our philosophers & priests were true that the system of nature is Infinite (limitless) and Eternal (timeless).
Anything you see or feel is the perceptive of biological life. You can't go beyond this perspective because you are locked into life and death is the key. Things beyond human perspective might be different.
The name Universe limits your infinite (limitless) and eternal (timeless) perspective or the actual perspective.
Time doesn't exist in the Infinity (of nothingness), as infinity is eternal (always there). Infinity is a logical fact, because something has to be there everlastingly, after everything else, even it is nothingness or vacuum.
Mass resides inside vacuum. Mass needs vacuum to reside inside it or exist, but vacuum doesn't need mass for its existence. Vacuum or nothingness is the actual realm and constitutes infinity.
The virtual mass is actually the displaced vacuum, which is like an adhesive bond that forms systems. This is how mass & vacuum are interrelated at the smallest virtual particle level. This relationship forms vacuum-mass bonded systems in this infinite and internal system of nature. Vacuum or nothingness is the actual realm and constitutes infinity. Things beyond human perspective might be different.
The Creator or Deity may be something other than mass-vacuum infinity or something beyond mass-vacuum infinity. There is no scientific proof of this concept, but the Infinity is a logical fact, as there has to be something beyond everything else everlastingly, even it is vacuum or nothingness.
If you want to travel into the infinity (of nothingness) to resolve it, before you start journey, you can imagine that this everlasting infinity is already laid out somehow out there everlastingly, which is a mind blowing logical fact, as there has to be something beyond everything else everlastingly, even it is vacuum or nothingness.
In our infinite and enteral perspective, all intermediate entities are the various phases of mass-vacuum relationship, for instance rock, planet, star, universe, multiverse and so on in the system of nature...
Hundreds of millions of years. Not even joking
Look at all those galaxies...
And people still believe that there cannot be any other life than humans.
@@nikkibelair8899 In my opinion there is life everywhere, even sentient one.
But, everything is so far away that as we look at stars and planets, we see their past and therefor we cannot see life activity.
@@nikkibelair8899 isn't that the first born hypothesis
@@nikkibelair8899 nah i doubt it.
Thank you so much for giving us new information.
I love watching your videos. Your voice and accent are soothing. Videos are informative and interesting too. You and CoolWorlds are my fav publishers.
This information it's very interesting, beacause when we see the stars 🌠in the night, we can think that they are static, but that's not correct, everything in our universe, planets, moons, stars 🌠, galaxies 💫 can rotate.
Beacause our universe it's similar to a wind - up watch that rotates in a perfect sync 🌌.
Thanks Alex for upload this video, greetings and a good beginning of week for everybody 🇲🇽👋.
Love your videos! I feel as though you missed a better segue between the galaxy rotations and the skincare sponsor; had you ended with the “black eye” galaxy it could have been much more natural. 😆
Haha and I already thought I was being creative!
@@astrumspace Your videos’ creativity speak for themselves!
This was a great video! Thanks, I learned a lot!!
Great video, new info I hadn’t heard before. 🙌🤗
They got wings made of Dark matter..!!😂😂
every time you speak i imagine you're totally smiling/grinning
I really really love this channel.
I could learn about this all day! Thank you!!
Oh damn ...we are in some kind of blender... Space, why you so freaky....
i feel so trapped. so many beautiful cosmic bodies to explore and I can’t even find a way off earth.
lol sucks to be you
Hey don’t worry. The photos you see are the result of multiple exposures, creating a composite image. The images are enhanced to create this beauty. They are far more beautiful in these photos than they are in reality. As for going to see one for yourself, they are so huge that if you every get a chance to go into interstellar space and visit one of these galaxies in person you would not be able to witness them as spiralling colourful entities. The gasses are invisible in our visual colour range and the stars of the galaxy are many light years apart from each other. So what you would see is just another starry night sky- much like we do from down here on earth. We are already at the edge of one of these beautiful galaxies the Milky Way! Step out side at night if you want the shortest trip to see a galaxy How it truly is. Beautiful enough I’m sure you’d agree
Great channel Astrum.
Very interesting thanks keep it coming .
Remember that thingy called Aether? Well it's back! Now we call it Dark Matter
Some people call Aether Higgs.
Nope. xD
MindsEd
yeah, but no.
Geologie: don't let pimples go supernova on your face!
That was very interesting, as always.
I need to say thank you. I have learned more from your channel then 4 Years of high school in the LA public school system.
The question I think really matters is "Why does everything in the universe spin?"
Velocity
Angular momentum
Boredom
If I understand your question correctly. Just my opinion based on what I understand - Gravity. It's is not really spinning, it is more orbiting. Spinning is when an object rotates around its own axis. Orbiting is when one (usually smaller) object moves in an orbit around another (larger) body. Basically they orbit around each other. This is due to the gravitational forces between them which is generally initiated by moving towards each other, but not in a straight line. This orbital motion is what keeps celestial bodies from just plain crashing into each other, which also happens quite often, hence the craters on our moon, for instance. If the gravitational force between bodies are too weak, they might just pass each other.
There are basically the three main events which could take place with celestial bodies in relatively close proximity of each other:
1. Just plain crash into each other. 2. Orbit each other. 3. Pass each other.
I hope this helps and that your question was not merely rhetorical.
How do galaxies rotate?
They go around.
Make like a circle, and go round
Hi love your videos, very inspiring :)
I think People forget Galaxies are also falling through a Medium we call spacetime. Tho we don't see it, it acts upon galaxies similar to how bubbles are shaped by the motion of the liquid they are within. Its fascinating to watch.
I challenge y'all to skincare-astronomy-puns battle!
Here's my lame attempt:
"Geologie: don't let pimples go supernova on your face!"
2:49 Find hot young stars near you!
Thank you for presenting some very interesting results. The animations showing the difference between orbital speeds and pattern speed are particularly instructive, though the sequence starting at 2:36 unfortunately suggests matter and the arms moving together... a stationary shot would be better.
Great viceo really enjoyed it
Me: mom I'm watching "how do galaxies rotate"
My mom: usually clockwise right?
"Geology is not a real science!" - Sheldon Cooper.
Ugh. Good riddance that show is over. It completely stereotypes scientists and what they do
Thanks, Alex!
Explained, as usual, very well.
As much as I appreciate the need for funding, and the effectiveness of advertising at providing it, having a beautiful science video tainted by something as obnoxiously mundane as skin care is a bit off-putting.
Congratulations on the sponsorship 👏🏾👏🏾👏🏾👏🏾
Would solve a lot of questions and create more but it would certainly give science a fresh perspective and more certainty in the direction we should be exploring.
This is amazing!
This channel is awesome.
Simply mind blowing.
Wow terrific video
Wow! Awesome! Thanks!