Teacher Reacts To "How The Universe Is Bigger Than You Think" [OMG]
ฝัง
- เผยแพร่เมื่อ 21 ก.ค. 2024
- My name is Michael! I teach geography, history, religion, social science and physical education. Way too many subjects if you ask me... I don't claim to be an expert in any of these subjects.
Although I am pretty awesome at PE!
Original video: • How the Universe is Wa...
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Perfect Quote and my favorite: "Two possibilities exist: either we are alone in the universe, or we are not. Both are equally terrifying." - Arthur C. Clarke.
It's incorrect there is billions of life but the universe is expanding to fast for them to notice us
@@broly3496 how is incorrect if there's no correct answer 😂
There is third wich is more terrifying than others two: there are aliens, but we will not make contact. Ever
@@MechanicheskiyBobyor that is literally one of the two options
the fact that most people think only we exist in the entire fucking observable universe makes me crack up.
Finding even a microscopic alien life would be the greatest discovery of human history.
Seeing someone so intrigued, and having genuine interest in space makes me happy!
My man got more confidence, “I talk a lot so if you don’t like that, go somewhere else”
Idk but I kinda got proud of that lol
Haha cheers! :D
@@simpleviking Yeah, but he talks too much, so I'll go ahead and take his advice. See ya!
@@thecrunchyferrett6985
Actually you said it was our entire universe compared to something else.
You missed what he meant in the video, the observable universe is what we can currently see with telescopes and light and beyond that is the rest of our universe.
And so it's the observable universe and the entire universe in this video "entire universe being our same universe", not about the multiverse. Though I do believe we will find the multiverse one day.
I would rewatch the video several times for anything you might have missed, and be sure to save commentaries for after the video because we want to see your reaction during the videos. : )
We can't see beyond the observable universe (yet) without more advanced technologies capable of doing so, sometime in our future.
We will be able to go beyond our galaxy one day, technology never stops advancing, there are breakthroughs and new creative ideas / higher levels of innovation all the time.
Recommended videos.
Here's a guy that did a review on another video about the size of the universe, you're going to want to see this. Be aware of the language in this video from the link.
th-cam.com/video/mdL3NgA12_I/w-d-xo.html
Watch all these playlists starting from the bottom of the created playlists, with the first 2 videos at the top of the Graphene playlist, and then go to the Photonic Computing playlist next to it to watch all the videos.
After that, watch the Spintronics playlist, and then all the Graphene playlists.
Watch the STL playlist and Time Crystals playlist after those other playlists.
th-cam.com/channels/B9ezXYprgvhMaPWLhyoJ7A.htmlplaylists?view=1&sort=dd&shelf_id=0
You will see why I mentioned that last link above in this comment, watch all the playlists I mentioned and you will see why.
And check out all the Quantum Technology playlists shown under the "created playlists" in that link, starting at the bottom of the created playlists.
@@thecrunchyferrett6985
And you mentioned something about something cool? How about something cool to show the kids?
Show them my other channel in my other comment, use the second link I sent to get there to the "created playlists".
Graphene - Photonics is amazing to me. Now add to that Graphene Spintronics and Graphene Twistronics, and Graphene Aerogels made in space to revolutionize the way we explore space, all seen on my other channel. A huge mistake people make is going to other sources for this info instead of what's shown on my other channel first in the link from my other comment.
Graphene Twistronics can be a super conductor which we don't know a lot about, or insulator.
There's also Quantum Computers like Graphene - Photonic Quantum Computers, Quantum Teleportation "used for The Quantum Internet coming by 2030 and as it matures with breakthroughs will be for advanced particle replicators for food replicators, clothes replicators, vehicle replicators, building / structure replicators, and sending things like a duplicate of your computer to other planets like mars and beyond our solar system", the Quantum Microscope, Quantum Sensors, Quantum Simulations, Quantum Entanglement, Quantum 2D Materials.
There have been a lot of breakthroughs with warp drives / warp bubbles, seen in the STL playlist on my other channel, don't forget to check out the Time Crystals playlist below the Anton Petrov video, other videos in that Time Crystals playlist talk about using the latest matured Time Crystals as of 2021 to early 2022 and beyond for unlimited energy.
Think about a Graphene sphere around the Time Crystal for 3 reasons.
1. To keep the Time Crystal from melting.
2. Graphene allows the Time Crystal to move around and reshape its original form.
3. Graphene is our best electrical conductor, it can transfer the energy to other devices.
Take that a step further with a Graphene sphere, Graphene Twistronics and a Time Crystal, and convert the electricity (electron) particles into artificial Photon particles for Photonics = light based energy, and have it as Graphene - Photonics sent to other devices in a home / building and through space ships devices and for other things on the space ships.
Supposedly Graphene used for a solar sail, would open other fields of research for a Photonic space ship, or as I would call it a Garphene - Photonic space ship.
Dr. Erik Lentz has a new theoretical warp drive that would use positive energy such as Soliton particles, he has worked on the calculations to get the amount of energy required down to the size of the earth, and Sonny White from Nasa has got the negative energy required for older theoretical warp drives down to 700 kg "the size of an elephant, car, or voyager space probe", yes for the warp bubble. A lot of exciting breakthroughs.
We need to get rid of silicon, plastics, copper and other things so that we can replace them with Graphene. Yes I'm aware of the scale up methods but we actually have new methods over the past 2 years that people can research. Don't listen to naysayers and their naysayer videos, most of these have old information about Graphene and they haven't updated their research.
Graphite is stacked layers of Graphene, and Graphene is just one layer of pure carbon atoms.
If you look outside at the grass, trees and plants, and at the plants / animals on land and in the water, they all have carbon in them.
We are made of about 15 - 25% carbon, and we eat carbon in our foods. Graphene is completely safe for us and the environment.
There is so much more to say, please watch everything in that second link from my other comment, all the playlists starting from the bottom of the "created playlists".
The other channel can also be found through my channel, though please use that link instead.
@@gameresearch9535 no one is reading that 💀
This is an oldie, but a goodie. The Carl Sagan quote always chokes me up a little. That man was the voice of my childhood.
Its nice to see an educated person react to this who can appreciate the true impact of the video.
truly
It sure ain't this guy.
For the gravity question - the equation for gravitational effect has the product of the masses of the two objects and a constant being divided by the distance squared.
G(M1*M2)/d^2
This leads to the distance quickly causing whatever the product is on top to becoming irrelevant if the distance gets too high since a square function scales up much faster than simple multiplication. There will always be some gravitational effect, but it becomes so small as to not be noticeable at a certain point.
what
Think of it this way we have a massive black hole at the centre of our galaxy even that has effects on how gravity works. Its also believed that every cluster of planets should have a planet just like Jupiter that pretty much protects earth from most space rocks etc... as Jupiter has a very strong gravitational pull.
So you mean gravitational pulse is infinite but the effect of it gets infinitely weaker the longer the distance? Thank you for explaining.
@@bigschnozer576 yeah kinda, it's a square function.
That means:
double distance, quarter gravity
triple distance, a ninth gravity
...
tenfold distance, one hundredth gravity
thousandfold distance, one millionth gravity
Exactly, gravity pulls no matter the distance.. but the more distance the less velocity you need to not be effected by it, and everything in space is moving really fast
The most horriffic thing to think is that if planet earth destroyed, the universe didnt even gonna notice one small planet is missing 😅
About life in universe: Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us. (Calvin and Hobbes)
and it's true
That’s very egotistical of a human to think they need to be interested in US. What if there are waaaaayyy more interesting things in the universe that peaks their interest? We won’t know because we aren’t traveling to these places (we went to the moon and going crazy over it, we consider the international space station distance to be space when that’s practically on earth). We can only use maths to calculate and telescope to get a slightly better view. Remember we are talking about beings that is so intelligent we can’t comprehend it, that’s like you walking past a worm who has no idea how smart you are compared to it and you pay it no attention (and they pay you no attention they just see you as a catastrophic disaster).
Whats the Definition of intelligent life? I think we humans are not very intelligent...we are the only species who destroys the Planet. Dolphins are more intelligent...and they even wont contact someone;)
Well it seems the universe is so big and places that could sustain life are so far apart it might be impossible to establish contact
This
The universe is way too big for us to be the only living things. I bet on another planets somewhere, some aliens are also wondering if they're the only ones 😁
100% in my opinion!
Nothing can travel faster then light through space. The space itself can travel with any speed it wants. Think about a dough with some raisins, when the dough expands the distance between the raisins will grow even though none of them have moved. So the galaxies do not move, it is the space between them that gets bigger.
like stretching a pizza dough... or a mochi.
I think galaxy’s do move 😐they don’t just stay in one area 😑they just moved very slowly however the Solar system rotes around the Milky Way the earth rotes around the sun 365 days a year and it spins 24 hrs a day 😑and according to the observer that could mean that the universe is expanding when it’s not also the Big Bang happend 13 billion years ago but that’s a lie 😑saying the Big Bang happend only once or saying that a universe came from nothing is like god created the universe 😑however energy can’t be created matter can be created and destroyed 😐also if the Big Bang happened their has to be a cause and effect 😑and saying th entire universe is 13 billion years old not logical 😑to get to every atom evey galaxy it takes time also the Expansion of the universe like the heat death or big rip requires no galaxy’s collisions but the Big Crunch does 😐and that is what’s going to happen in the future anyone can understand the Big Bang 😑however what came before it well….that reminds a mystery not saying their was nothing but it’s something we don’t understand 😐and our brains can’t cope 😑the Big Bang and heat death simple 😑never to live again in goggle years 😑so what do you think will happen in a goggle years before?😐you could say nothing that may be but what makes you think heat death will happen in a google years ?😐when you die you will end up in the same place as if you were not ever born on the first place 😑just like in the beginning or if their even was one 😑you would be nothing again 😑you will not know how it ends or begins 😑every theory we make fails in one way or another 😑that’s Beacuse the cosmos is much more complicated then we humans can ever image😑 in fact it’s so large that our brains just melt 😑to know the universes true age you have to look deeper 😐and I will tell you 14 billion years is not going to cut it 😐if you look at the observable universe their is no Big Bang 😑the CMB is only based on microwaves given to from black holes stars planets etc 😐I don’t see any room for a beginning 😑you can’t just say time beginning at the Big Bang 😑maybe their is no Big Bang 😑in fact you would have no idea that this planet would ever form in the beginning 😑Beacuse when we die we will return to the same place as if we did not exist in the first place 😑a place of nothingness again…😑we will loose track of time 😐we won’t know what will happens we don’t know if the universe is finite or infinite 😑the objects in the cosmos are to big to be 14 billion years 😑what do you expect 14 billion years we will live again?🤔 yea sure 😑I highly doubt that 😒the Expansion of the universe like the big rip and heat death requires NO galaxy collisions Beacuse space is expanding 😑however the Big Crunch says the galaxy’s can collide with one another 😐the universe as we see it appers to be (flat ) meainging no end or beginning and a flat universe could be like a doughnut or a taurus 😐 the universe is not just a a simple Big Bang only the universe to end forever 😑it’s very complicated 😑also when they say ( theory ) that does not mean it’s true it may make the most since 😐at least in our minds, but you have to realized before and after we came into this world we will be in the same area as if we were not born in the first place and we will loose track of time all together 😑that’s why a trillion years sextillion years a so called infinitesimal time ago we would have no idea that this planet ever formed 😐we just don’t think about it Beacuse we are living 😑but as scientists make new discoveries about the universe you will soon realized it’s not all that simple 😑many things in the universe have different ages to them 😑but Beacuse our minds say it’s to complicated we just say everything is 14 billion years but in truth is not all that simple 😑
"6x longer than the age of the universe" to drive to our closest star at 100km an hour.....that literally hurts my brain, I know theoretically its true but my brain still has trouble computing lol
The probability aliens don't exist is 0%.
Idk aliens probably
If you watch my videos, I had to take a week off. 210 grades is no easy task before the summer break :P
I still got 3 weeks left :(
15:55 The night sky will never be completely dark as long as our galaxy exists because as he said earlier in the video, everything we see with the naked eye is a tiny part of our own galaxy, and our own galaxy is not expanding away from us.
I think he meant the light recieved through high-tech telescopes
Nothing can travel THROUGH space faster than the speed of light, but space itself can expand as fast as it wants.
I can’t wait when scientists find a way to travel faster than the speed of light, maybe I’ll be long gone but I’m sure it will happen someday.
@@bigschnozer576 I doubt it. I believe we going to be able to get close to the speed of light but not pass it
It may also be that things aren't traveling faster than the speed of light. We know that gravity has an effect on light and since we've never been outside of even our own solar system, let alone the galaxy, we don't know if the speed of light is faster than what we're seeing within the gravity well of our galaxy and solar system.
Yes, the speed of light is calculated based on the measured speed within a vacuum. However, even if we create a vacuum here on earth, that vacuum is influenced by the gravity of the earth, the sun, and the galaxy. Would the massive gravity well that is the Milky Way Galaxy have an effect on the speed of light that travels between the galaxies? Without physically being out there to measure it, we can't know for sure how much of an effect it has.
So, for all we can possibly know for sure, they're "expanding" faster than the speed of light measured within the massive gravity well of the galaxy.
Can you move faster than the speed of light? Theoretically, tachyons move faster than the speed of light. So, the speed of light limit may just be the next speed limit to be surpassed.
To the gravitation question:
As far as I know, you would have to be infinitely far away, the gravitational force could be shown in a graph as a asymptote, where y is the force and x is the distance and for x-> infinity, y gets close to 0, but never reaches it.
And the rate of the force dropping off is proportional to the distance cubed.
@@TimoRutanen and realistically speaking, the further away you get from a singular gravitational pull, you also get closer to another...
@@HenSt-gz7qj Realistically yes, though that's somewhat irrelevant to the question.
The bottom line is that you never completely get away from the gravitational force of an object, but at some point its strength becomes practically insignificantly small, especially in comparison to other forces in the vicinity.
The smallest unit in existence, is the Planck unit. So if something affects another thing by a gravitational force smaller than the length of the Planck unit, I guess that's the theoretical limit.
This applies for the observable universe - if the theories are correct, the effect of gravity travels at the speed of light, so anything outside of the observable universe hasn't had enough time to influence the gravity of the observable universe.
About the "We need to make more progress", I agree but we won't get anywhere with War and the other thing everyone goes on about (begins with R). If we never bothered with those things we would have advanced massively in almost every area, not just space exploration.
Jehovah even said we aren't made to understand the universe, no human can comprehend the infinite universe cause were not infinite. But in the new world( if you know about Jehovah's witnesses) we will be immortal and perfect, having a perfect understanding of the universe. That's just how he puts it, however it's up to us to choose what we want to believe.
RealLifeLore is such an amazing channel!
and glad to see you back
The expansion of the universe is said to be faster than the speed of light, although its technically not "speed" the universe is what allows speed to exist, it is both the distance and time. The universal expansion is just the increase in space between objects, very mind melting but cool fact.
Nothing can move faster than light... through space. Space does not move through itself, and is not restricted by the same law.
Having said that, no part of the universe is actually currently moving faster than the speed of light, it just seems to from our vantage point.
For example, if our neighbor was moving away from us by 1 meter per day, and his next neighbor was moving away from him by 1 meter per day, then his next neighbor would appear to be moving away from us by 2 meters per day. Apply this to the universe and it's easy to see how parts of the universe could be moving away from us faster than the speed of light, but not actually be moving faster than the speed of light.
The universe is 13,7 billion years old. If universe expands with the speed of
light the radius would be 13,7 billion light years which it is not. The radius is 46,5 billion light years, this means that the universe expands much faster than the speed of light.
@@reineh3477 First of all, you didn't pay attention at all to what I said, or didn't understand it. There is a reason I gave an example as to how the universe can appear to expand faster than light without actually doing so. Second, I never said that it never did at any point, which is why I also have the qualifier in there that things cannot move through space faster than light, but space itself does not have that restriction. At the very beginning, just after the big bang, it definitely expanded faster than light, then slowed down, then gradually began speeding up again. The current expansion rate is 'not' faster than light, but distant places 'appear' to move faster than light because, over a great enough distance, those local expanding spaces add up and push the distant ones away from each other faster than light, even though nothing is actually going that fast.
With all of space expanding, and making new space to expand, it can be 13.7 billion years old and be larger than 13.7 billion light years across without anything ever expanding faster than the speed of light. You're taking it as if it expands 1 light year per year in total, but it doesn't. If we start with 1 light year and it expands to 2, then those 2 light years would each expand by 1 light year into 4, then into 8, then 16, where as in your thoughts it would only be at 5 at that point. That is the difference between what you thought I said and what I actually said.
The first trip to Mars will supposedly be a one way trip. Around 200,000 volunteered not sure how many are still in the running in 2015 they said it was down to 660.
1:55 Basically, gravitation has an infinite range. It's just that the more objects are far, the less they will attract other objects, and that's not even linear, it's squared.
Nice haircut!
Haha thanks
A simple yet crazy example
There are more stars in the known universe than every single grain of sand on Earth
6:57 Exactly I sometimes have that feeling rising when seeing other humans/people interact with one a nother in such a way that is just fascinating.
You just touched upon arguably the most elusive mystery in the Theory of Relativity... GRAVITY!
I want these 4 things so bad :
1. A speed of light (or faster) spaceship
2. Eternal Immortality
3. No food, oxygen, water required for me to survive
4. Infinite memory
You are absolutely adorable . . thank the algorithm for bringing you to my feed. Space stuff is awesome!
Gravity has an effect at infinite distance, although in reality, once you get past the Lagrange points, it’s practically zero.
the easiest way to picture expansion faster than light is to imagine a pair of scissors being closed. Each blade moves at slower than the speed of light, but they come together much faster than each of them move. It is the aggregate of their motion that can exceed lightspeed
great video. I would love to see more astronomical stuff
i just finished watching your Teacher Reacts To "Family Guy - Roasting Every Country" [PART 1] and gotta say i love your story about the gym shoes i was never raised to feel that way but teachers like you when i was in school were the only reason i made it through school and they had very similar story's hearing that was nostalgic
I love the idea too that all the stars we see with naked eye is in Milky Way. But there are slight excpetions, supernovas, they can shine upon us from much farther away. A gamma ray burst from 7 billion years away was visible for naked eye, for example.
The fact that you've said that it's "easy" to put a person on Mars made me smile a bit. Optimism is nice, but we still have ways and ways to go to make long travel in space remotely viable, because of how low gravity affects our health. And people who do space travel are usually pretty healthy. Blood circulation issues, bones issues, eye sight - there's a plethora of them that we haven't found a solution yet (or solutions are only being tested). We won't be putting a man on Mars for quite some time yet still. Even if we have technology to "deliver" someone on Mars, surviving the trip would be another thing entirely. If there's any hope whatsoever to possibly make a self-sustained colony there - they have to be figured out first. And there's a slew of others.
That is why space travel in sci-fi have artificial gravity, they bring a self sustainable food and water supply a way to block the radiation or deflect it. If you want to go to Mars just keep solving the questions of how just like those that went to the moon did.
Even if we get there.
There's no breathable air, no gravity to make any, no soil to grow anything, no water to drink, the temperature averages -60c with lows of -112c in winter.
You can't "terraform" it because the atmosphere is so thin it would leak out into space if you tried, You can't make water because the atmospheric pressure is so low that liquid water can't form at the temperatures that exist.
It's a rock and it will stay a rock, it died billions of years ago and no amount of wishful thinking is going to change that.
Does artificial gravity erase those problem? With a part of the space ship ( or the spaceship itself) in rotation in order to give a constant 1g?
Sounds like the universe keeps playing a never-ending game of Hold my Size with its titanic structures to me *shrugs*
I hate you for the "Mixtape"-Joke, I spilled my water. XD
One way to partly grasp the number of stars in our galaxy is to think of a large sports stadium which seats 100,000 people. Now imagine that once per second, all those people vanish and are replaced with different people. To get to 100 billion people you need to keep doing this for just over 11 days.
Given that number of stars/planets, it's almost inconceivable that there's no life elsewhere in the galaxy. We don't know how difficult it is for life to arise on a planet, but it appears to be relatively easy given how rapidly life appeared on Earth once it had cooled enough for life to survive (a few hundred million years). After that, the big barriers appear to be the arrival of multicellular life (which took around 3 billion years on Earth) and intelligent life (which took another 500 million years). With any reasonable guesses for the difficulty and time required for these steps, they almost certainly didn't happen on just one planet in the entire galaxy.
It's unlikely that there's life out there several billion years older than Earth as you need at least two generations of stars to produce enough elements heavier than hydrogen and helium for rocky planets with life on them to form. Even so, life could easily have formed a billion or more years ago. That does then lead to the question of where everyone is. With self-replicating probes travelling at 10% of the speed of light, you could cover the entire galaxy in just 1 million years. Constructing probes like this is beyond us at present, but they're in the plausible near-future rather than being impossible.
However earth's relationship with the moon and the goldilocks zone, the Earth's core, etc. make earth more unique. thus possibly reducing the likely hood of life somewhere else.
@@autohmae Not necessarily. There is a strong suspicion that life exists within our solar system, beyond Earth. One of Saturn's moons, Enceladus, is hypothesized to be an ocean under the ice, where it is thought that life could exist. NASA has had plans to build a probe to investigate. There have been documentaries made showing progress being made on working up prototype drones for the mission.
@@odisdracul lots of countries make plans, but nobody ever seems to go.
I think the most underrated question in life is,
Will we even be born on Earth again, what if the whole universe is a spawn point...
So glad to see you back!
Thank you! :)
Love that Sagan quote "a mote of dust, suspended in a sun beam" a mote...of dust... that is literally what we are. Do aliens exist? of course they do... we are the aliens.
0:05 “I’m not easily impressed….”
*10 seconds later*
(Is easily impressed) 😂😂
The first people on Mars will never return. Because their bodies will change too much and it'll be pretty impossible for them to come back.
Discussing aliens is one of my go-to "Let's skip the small talk and just dive into a real conversation" topics... (I have been known to ask about aliens on a first date 😂) Other lifeforms undoubtedly exist throughout the universe and it's plausible/probable that they coexist within our galaxy.
"Humans are a mess but we're so damn interesting" - Yesss, I've always loved people watching! It's especially fun to mentally narrate your observations in a David Attenborough voice.
On a completely unrelated note: I think I remember you mentioning Sweden Rock a while back. Did you end up going?
Where have you been my whole life? Lol
I love your intro LOL.
"I talk a lot, And if you're annoyed by that go find someone else"
😂
You gotta insta-sub just from that one line.
I don't know about our galaxy, but I can say with almost 100% certainty, there's at least 1 more planet that sits in the right zone to it's star that has some form of life on it.
NASA has found dozens of planets outside of our solar system that are within what we call the Habital Zone of their respective stars. Habital Zone meaning that life could exist. With each of these planets they've sent probes to go and find if it's a possible place for us to colonize eventually or if there are life forms on the planet. One probe I know of was sent in 2009, but it won't reach the destination for at least 10 more years.
11:00
Yes of course.
The problem is, even if we would see something, it is lightyears away, so we can just look back in time, but will never know what is happening right now.
I‘m pretty sure there are a lot of „Aliens“ out there, that are pretty similar to us, not like in the Sci-Fi Movies or books with Special looks, i mean, why should nature and physics work different just because it’s not on Earth?
It seems more likely for it not to be similar to us
bro,life itself is already a miracle and here are people saying "i BeLiEvE tHeRe Is OtHeR iNtElLiGeNt LiFe chill we havent even found actual beings instead of bacteria on other planets
@@someone94949 you didn’t really got what i saud did you?
For your little brain a bit of knowledge:
1st of all, the universevis god damn big, it is so big that you can’t even imsgine how big it is.
2nd as i allready told you, all wecan see is Lightyears away and not just 1 or 2, more about a few thousand, sowe are looking BACK in Time when we look into Space(seems like you don’t get that)
3rd we also just started here as Bacteria.
4th there are Planets,Stars and Systems out there, that travel with near light speed, so we can’t see them or even when we see them, they are not just the lightyears away we expect, caused by their speed, they are so much further away in time when we look at them.
So it is impossible for us to ever see anything out there caused by how big everthing is, we only could see it when it allready happened.
Just a short thing for you, so you can understand it better, when you see the sun go down, you just see the past, cause the sun is 8min away from us in lightspeed, so when it would explode for example, we would see it 8min later.
Hope this gets you more of a feeling for it what i meamt by saying, there are definetly Intelligent human beings out there, but we can’t see them caused by how big our universe is, we didn’t even saw about 0.00000000000000001% of out own galaxy closely enough to see if there would be life on it and it is just our galaxy, there are about 1.000.000.000.000.000.000.000.000.000.000 other Galaxys out there and a lot more we can’t even see yet.
@@matthiasmaier1207 delete reply = L if you are telling me some shit i already know let the other people hear it too, WoW,wHo WoUlDvE gUeSsEd ThAt LiFe StArTeD aS *BACTERIA* 0_0
@@someone94949 i didn´t deleted it, but nice to see you deleted your bs comment.
But here again for you little.....:
We only know abou 0.000000000000001% of the whole universe and you are telling me, that there is zero chance that there is other life out there?
Sorry, guess this is to high for you, here a little example for you to understand it better, we know exactly one sand corn from the whole Sahara.
Got it now?
And again, there are objects in space, that travel with near light speed, so even when we see them and they are a few hundred light years away, in reality, they are a few thousand light years away.
When you look into space you just look into the past, if the sun explodes, we will see it 8mins later.
And YOU told here, that we only saw a few bacterias somewhere, but for YOU it is still impossible that this also means other live in space.
Big L for you and your unknowledge about space and time.
You are correct about the expansion theory, but conversely, there is also the collapse theory, where just as fast as the universe is expanding, it will collapse back on its self at a compounded rate of speed to create a new Singularity.
Physics is crazy, wish I was one of those minds that could actually grasp quantum theory and string theory etc.
I suggest reading Brian Greene, Michio Kaku, Neil deGrasse Tyson etc... They make things easily digestible.
It's not true that the universe will continue to expand forever, it's predicted that it will start to contract, but that'll be about a hundred million years from now.
How far away to have no gravitation effect? Well, that depends on the mass of the objects, but I'm sure there is a formula for that to calculate it.
there could be like another 1000 or more planets full of life in our own galaxy alone but they just like us have the same issue of not even existing long enough and haven't been able to come up with a way to go far enough from their own planet to come in contact with another life filled planet so we all think we are alone
Ya, the problem with space travel in general is that the distances everything is at, makes it nearly impossible unless you are going for a generational ark type of space ship. Because even at light speed we are talking over 4 years just to get to the nearest neighboring star. And the chances of us even being able to travel at that speed is pretty much zero. And even the whole ark thing would really only work for the closest stars too us. And with how unlikely it is to find a suitable planet to live on, what would even be the point?
Some sort of warp, is pretty much a requirement if you want to do any meaningful amount of space travel.
Not exactly you dont need a warp just need to go faster than light. How do you do this well the universe gives us a hint in the form of black holes since the gravity they create light can't even escape but how does this help? Well if you were able to create a machine that can control gravity that's built in to the ship. It needs to do 3 things first use gravity to make a field around the ship second it needs to increase gravity behind the ship to propel the ship and decrease gravity in front of the ship to decrease drag. yes drag exist In space. And actually a accidental discovery of how to do this has happened but as it's not part of the research being done so no ones paying right now to further research it.
@@Cody.Wright
To be honest, I consider that a type of warp (in fact believe it's traditionally known as a warp drive due to Star Trek).
Also, your description is a bit inaccurate. You are not propelling the ship, nor are you using gravity to decrease drag. The idea is you are using gravity to bend space behind and in front of the ship in such a way to make distances shorter. Basically it's kind of like you are moving space around your ship rather than moving the ship itself.
I think it's statistically very likely that there's life somewhere else in the universe.. we may never confirm it but it would be very improbable that we're alone in this universe.
Ya more so if number of sand grains on the earth times 150,000,000,000,000,000,000,000 is how many stars there are.
If you want an interesting perspective of if we're alone in the universe or not, I HIGHLY recommend watching "Why we might be alone in the universe" by Cool Worlds. He has some really awesome videos, and that one gives a really good insight of how it is equally as likely that we are alone. Super awesome video. I still think there is definitely life out there in the Universe, but that video gave me another way of looking at the whole thing.
I 2nd your suggestion. Cool Wolds does not disappoint.
14:05
So it's expanding slower then the speed of light, but it's doing so *everywhere* at once.
So the overall effect is that light from further and further away will never reach us, because the space between us and them will keep expanding cumulatively faster then light can cross that distance.
To understand this make a line of dots with equal distance between each dot on a ballon with a marker, then inflate it.
The dots furthest away from each other move apart faster then the dots closer together.
But the balloon itself is expanding at a constant rate.
Now expand this to a whole universe...
As for the part about places in the universe and their light never reaching us because they are traveling away from us faster than the speed of light! I believe this is not because they are traveling faster than the speed of light but because we are both traveling in opposite directions, both at less than the speed of light. An easier way to help people to picture it is like this; if two cars collide head on and both were travelling at 60mph then that would be an impact speed of 120mph. If the cars are heading away from each other in opposite directions then the gap between them is increasing at 120mph, despite the fact that neither car is travelling at the speed at which they are moving away from each other. Sorry for the essay a and my not so perfect grammar but I hope this makes sense.
With how extensive the universe is there has to be aliens
your comment about wanting voyager 1 tattooed on you, i have it on my upper arm it’s one of my favorite tattoos lol
The amount of gravitational force an object has on another object depends on it's mass...
It’s highly arrogant to believe that we are the only intelligent life in the universe.
There could be intelligent life scattered all around in the milky way galaxy. It's just with how vast everything is. The chances of us finding one another is extremely slim.
Going to Mars... Infographics did a video on this. About the problems involved in doing so. About five months ago, I think.
12:06 whats the shape in the top left corner?
We're like a dust particle flying around in space, that makes us the bacteria living in the dust 😂🤣
If you have ever peered through a microscope and saw round or odd shapes, imagine them as nebulas or galaxies, then imagine where Earth would be on that scale. We would need the technology to dissect an atom effortlessly in order to detect something as small as Earth.
We live in the best time of the universe where we can observe other galaxies.
In the past was probably an even better time. But compared to the future, yes, now is the best time.
About aliens...I think time is as important as geography. There is a series on British TV hosted by Brian Cox (the planets) that discusses that Venus and Mars in history were better places for life than earth at different points in time. In theory an entire biosphere could have developed on each, civilizations rose and fell...but after x billion years there is no longer any trace that any of it ever existed. Or maybe they were always just rocks
Or maybe any traces are so far below the surface we still have no idea (assuming yet)
10:58 I think it's possible. I don't know if it is. As you said Time is a huge factor as well. It really is not just the 'fastness of space', but the 'fastness of space and time'.
18:54 we can not reach many of those places, even if we make it our only goal as the full human race and out all the effort into science.
16:15 the nightsky wouldnt change much
since we see stars and nearby galaxies in the nightsky we dont lose them if the small cluster is locked to another cause of gravity
We just see a tiny portion of our galaxy with naked eyes.
14:00 From how I understand it, no conventional matter/energy can travel faster than the speed of light. However, spacetime is a field and can expand and contract beyond that speed.
2:28 No, not Aldrin and Armstrong.
I'm not 100% sure who it is, but since the guy on the left is having the red "Commander of the Mission" stripes on his suit, it is Apollo 14 or later. The stripes were first introduced with Apollo 13 (which did not land due to the accident) after NASA figured out after Apollo 11 and 12, that it was somewhat hard to tell two astronauts wearing basically identical spacesuits apart in photos and videos, so starting with Apollo 13, the commander had red stripes on his suit and helmet.
If you are looking for suggestions on other sources of videos to react too, I'd love to see you check out anything from Kurzgesagt or CGP Grey. Both are great channels with well researched content. If you aren't familiar with them Kurzgesagt does a lot of science based videos (as well as a few geopolitical ones) and CGP Grey has a lot of more history based video's that are a lot more narrow (and sometimes more obscure; but still interesting) then "The history of an entire country" for example.
From CGP "The Missing Pandemic: Americapox" or "Why Black Holes Could Delete The Universe - The Information Paradox" from Kurzgesagt could be good choices, buuut... You could really take your pick from basically any video from either of those channels that sounds interesting to YOU and I'd be interested to see what you know, or think or what your take is or whatever.
I don't really watch reaction channels, but yours has struck me for some reason. And I'm interested to see more, especially History or Science related reactions from you.
What subject do u teach
I do wonder if we could put like a space station or a probe bettwen earth and mars so that the communication could be faster
That sounds like a good idea
That actually wouldn't help at all with any kind of currently known technology. We would still be unable to transmit a signal faster than the speed of light. That's not something we can crunch down upon by putting relays in between. The reason for me saying "currently known technology" is the concept of warping space to move something at a speed faster than light.
The chance of us being the only life in the universe is the same as someone winning the Euro millions jackpot a 100 times in a row
“Nobody knows everything except some unknown known know it all”
James Joyce Finnigan’s Wake
18:54 You won't be so depressed to realize that we could possibly manipulate black hole technology to create wormholes to other galaxies. Plus there's antimatter to use for space travel to go at 1g acceleration.
as far i understand it the furthest the gravitational effect of the solarsystem reaches is the Oort cloud ( mathematicly ) after that no one knows wahts up. but save to say gravitation is everwhere in some form.
Nothing can travel faster than the speed of light in space but space can expand faster than the speed of lights.
No matter how incredibly small the Earth is, there are people such as 'Simple Viking' who interrupt and take over conversations, as if their words matter. So egos, are bigger.
This truly makes me feel what I and all the rest of humanity our planet, the whole solar system are just a grains of sand in the Universe.
i'm with you, man... i never understood religion. the universe is vast enough and mysterious enough that its really unnecessary to try to invent a reason for its existence. if we worship anything, we should worship the greatest among us. the scientists and explorers. the philosophers. the artists. those men and women who have made the human experience better.
all religion does is regress the human mind.
You’re correct that the universe is expanding faster than the speed of light, but it’s not moving necessarily. Think of any two points on a balloon as points in space. As you inflate the balloon the two points don’t move away from each other, the space between them grows.
Fun thing I heard is that there is a theory about the Warp speed from Star Trek that might work in order to bend the area in front of the shuttle in a speed close to the speed of light. If we could bend the area in front of the shuttle it could accelarete further than the speed of light based on the area being bent.... so in theory if you bend an area 2 times the length of the shuttle you could go double the speed of light.... Now if you could bend more area in front of the shuttle you can go further and faster....
Either that -or understanding black holes or wormholes then we're talking! :)
i am going to mars when there is servers for videogames on mars... i am not playing on eu west servers with 40 minute ping...
11:00 when you wanna know, how small we are
A normal human can't feel a difference between a million and a billion it's to much people always underestimate a billion
The thing about life on earth is that yeah it’s diverse and robust but we all evolved from the same single cell ancestor. Life formed once on planet earth, that’s it. And we’re all dependents of that
Humans would be able to do inter galactic travel if and only if our civilization would find a way to create or discover a wormhole or create a warp drive in the next million years or so.
3:08 Actually, it would be a MASSIVE SERIES OF PROBLEMS 😅. It takes 6 months to go, 6 months to come back, and there's a whole year in between that you can't come back because the Earth would be behind the Sun and communications take 20 mins to do the round-trip. We struggle to put people on the moon and it's only 3 days away…
Imagine the size of the rocket to store all the food, water, oxygen, training gear (1 trip being literally 4x longer than the average ISS trip), etc. And whoever gets on board better be reaaaally good friends because they'll probably live in a super cramped space for 6 months, live together on a foreign planet for 12, and live in the super cramped space again for another 6 months. The list of problems just goes on and on and on…
Where did they get that picture of the the lager universe from? From that probe they sent out into space in the 70's?
7:53. fun fact. 1 trilion seconds ago the neandherthal got extinct, and 1 bilion seconds ago the soviet union still existed. while 1 milion seconds ago was over a week ago. damn.
What's crazy is you can fit ALL the planets in between the earth and the moon.
Also there's probably 100's of civilizations in JUST OUR OWN Milky Way galaxy.....
3:27 I honestly don't think it ever will… We'll either destroy ourselves first, either just never have enough money to make it there.
10:10 yes ofc there is even aliens in our solar system (bacteria's) i think i spelled it right
2:10 Fun fact: you can also fit all planets between the Earth and the Moon with Pluto and there'll still be a little room to spare 🤓.
Universe expands faster than light but just from our perspective. It expands not faster than light but as new space is created everywhere, the cumulated new space along the journey from the far reaches to Earth makes impossible that light to ever reach us.
The Apollo missions made use of the gravitational forces of the Earth and the Moon. They let themselves "fall" towards them, which saved fuel which they only needed to correct their course and bring themselves in orbit or escape the gravity fields.
These astronauts are not Armstrong and Aldrin. You can see that because the right astronaut stands next to the antenna of the Moon rover. Only the last few Apollo missions had a rover with it to expand their range to do research on the Moon.
I believe there's life elsewhere within our Galaxy, but we might never actually know about it.
The thought I like is that as we are part of the universe (we and everything are made from star dust), we are the seeing and thinking part of the universe trying to understand itself 🤷🤕👍.
I feel sure there must be billions of planets out there with intelligent life on them, circumstance and probability and pure luck must have created billions of different species, frustrating that we don't know for sure though. ❤️🇬🇧