It’s weird to think everything we are talking about was already so long ago. In actuality, we have no clue what is there. We are just watching shadows of what once was.
Pretty much, and not to scare you but, most of the stars seen in the sky today have either died or fell out the universe into the void, so really its just darkness outside the galaxy, we are seeing things billions of lightyears ago
The fact that we are actually looking back in time is astonishing. The scale of the universe is just too much to comprehend. There is definitely intelligent life out there, the immense distance between planets In our own galaxy is too much to ever travel, never mind between galaxies, especially that, theoretically, any speed in excess of the speed of light is not feasible. 100x the speed of light is still “slow” for inter-galaxy travel, even to slow to another quadrant in our own galaxy. Hopefully the “wormhole” theory that has been brought up is actually true, and one day in our future the “Star Trek” scenario may hold true.
The odds against life out there are astronomical. For life to suddenly appear and survive, it would instantly need a mechanism by which to replicate itself. Like DNA. And that takes a very long time to evolve.
Everyone in this thread is wrong. There is no guarantee that there is other life, and there is no guarantee that there is. The fact that we exist is one data point, which essentially tells us nothing except for the fact that it is possible. It could be 1 in trillions or 1 in 50. But OP is right in that it likely doesn't matter regardless, because we almost certainly will never be able to reach them, or them us, unless the laws of physics in which we know them are broken.
For me it's actually mind numbing for an opposite reason. The earth is about 4.6B years old while the universe is about 13.7B years old. That means that the universe is only about 3 times as old as the earth, despite being vastly bigger in size. When the earth was born, the universe was only 2/3 as old as it is now. Meaning that the universe is actually really an infant, and we are one of the earliest generations of planets.
I think the James Webb will in fact not see the early stages of the universe but will just see billions of more galaxies and prove that the universe is much older than astronomers believe it to be. Like what always happens....just when you think you know the universe, it gets bigger.
@@feedayeen The problem with JWT is the resolution. A backyard telescope is better in visual light than JWT is in IR. The IR spectrum is much wider than visible light. Because of JWT cryogenic properties, it has a much higher sensitivity than large earth based telescopes. We have a lot to learn about the early universe and the properties of the galactic center.
@@feedayeen Thanks for the technical reply. I have a lot to learn about photons. They are of a very fascinating subject. It is something I have trying to mentally envision all my life. Photons are spooky little critters. I had not heard of the Maximum angular diameter distance before. I just found an article in the Oxford Royal Astronomical Society on the subject.
@@oldmech619 The resolution in visible light is not the issue, the cameras are infrared but can also see red and yellow. If a visible range camera was put on JWST then its resolution would be on a par with Hubble due to it's larger size and far better than any backyard telescope (if you change the reflective coating on the mirrors).
The most fascinating thing about astronomy is the fact that what we are seeing are images from the past. Significant time passes before the light from those far object reaches us which means we could never see what is currently happening to those object. Only thing we could see is how they look like from the past when the light emitted from them started it's long journey to reach us.
We can see visible parts of space and do calculations for size and distance. We can visulize yards, meters, kilometers, miles, etc, but can we truly comprehend the distance that billions of light-years is? Not really.
And to realize you're literally incapable of even truly realizing how big our galaxy is. Likely human minds are incapable of truly comprehending the vastness of our own solar system Imo but that's just speculation.
3:17 "Now this means there are some highly energetic events taking place in HG1..." I believe the proper sentence is; "Now this means there were some highly energetic events which took place in HG1..." since we can never know what is 'currently' taking place in HG1.
It's still somewhat correct to say that they are happening. Since we can only observe the Galaxy at its distance from us (due to Space-Time) the events that *did* happen there are happening *now* for us. So while the events are in the past technically speaking; what we see is what's happening there now for us. That Galaxy may very well be long since dead, but since it's light from 13 billion Ly ago is what we're seeing, that's what's happening for us. Time is a very interesting concept. All it really is, is a measure of distance conceptualized by Mankind. Helps us understand things, but in the grand scheme, it may not mean much at all.
@@jokercard98 Geez that is so weird to wrap your brain around. The more I think about it the more wtf moments my brain has xD Space is so cool but scary sheesh :D
I've always been a "map guy". By that I mean, ever since a very early age, one of my enjoyable pastimes was to peruse the pages of an atlas and just wonder, what was going on at that place right now? When I look at a picture of the "available" universe, as for example, depicted in screen-freeze at 0:52, I can't help but be totally awestruck at the considerations of what may be out there. It is so incredibly humbling to see a picture, sitting in my house, on a computer screen, of places that are so far beyond my imagination, it's almost difficult to cope with. I sincerely hope that we find concrete evidence of alien life before I die. It would give me a profound feeling of satisfaction to know it was accomplished while I'm still sucking air.
I used to lay down and look at the stars and wonder what was going on around them. I do the same on google space, put on some music and just spend a few hours looking around.
That is awesome, I sat back and looked at that deep field picture and even though I understand how large of an area and how many possible planets with life could be in there it still amazes me every time… it is so amazing how large things are I wish I could experience it for myself
This means that the galaxy's shape we are observing now was 13 billion years ago and if we want to know the present shape of the galaxy then we will have to wait for 13 billion years or more because as the time passes the galaxy is moving farther than it is now.
I still don't 'get it' = ? at the "Big Bang" was "everything" shot from a single point like a bullet ? Is the telescope 'looking down the barrel' ....? iow, was the BB an explosion/expansion in 1 direction ? OR, was the BB in " all directions " ? If 'things/galaxies' are all going in "all directions" then there are galaxies at least twice as far away from us as from the 'center' 'beginning' ...? (iow are we only looking in a line straight back to the 'point' of the beginning 'event' and 'we cannot' or 'have not yet' looked 'beyond /to other direction'. Can we look in the direction we're headed ??? Is this telescope just a 'rear view mirror' ? I feel like I'm on a Flying Wheel at a carnival being looked at under a microscope !
The *Entire Universe?* I think just the part of actually doing that would take far longer than the rest of someone's life. If there is something really amazing to them out there, they could die of old age before reaching that selection. I am assuming you have a concrete, back and white definition of what makes a planet "habitable", with no ambiguity. 🤔
@@TheNoiseySpectator Bro, He said "wouldn't it be cool" in a hypothetical sense, not in a practical sense, just like how a child would say "Imagine if humans could fly", He didn't say it was possible for us to do this nor theorise how we could do this, He just said wouldn't it be cool. So please take your salt somewhere else.
@@TheNoiseySpectator he was being speculative and imaginative And nah it won't take too long, maybe not in our life time but in our life time we will be seeing the stepping stones towards the grand travel If we can find a way to move fast enough so it won't take us 40 lifetimes to get to our closest habitable planet we'll be seeing humans in space very soon. But let's just leave it to the good Ole musk to take care of that
Correct these galaxy’s may not even be here anymore because we’re seeing it so far in the past if we went of HD1 and looked at the solar system it wouldn’t even be a thing yet
There’s one theory that all of the super massive black holes like the one at the center of our galaxy formed during the early hot dense universe. This black hole seems to support that theory although the exact process of how they formed is not known.
The original black holes would have formed the same way stars do. Its just they were so massive they collapsed directly into a blackhole. All a black hole is, is a star so dense that its gravity overpowers the speed of light. I would guess that it is extremely bright inside of a blackhole.
Now I have some questions... if the reshift is due to the galaxy moving away from us, and the galaxy is 13 Billion LY from us.... then the light is reaching us from 13 B years ago. So, we are not seeing the age of the galaxy now, but we are seeing what it looked like 13 B years ago. It's like trying to figure out what someone looks like based on baby photos. We know the object is old because of its distance, but we are not witnessing it in its old state. So is the 100 stars a year more reasonable for a new galaxy?
Now when I look up in the sky I know that the stars that appear in the sky may not be actually there. But even after so many light years they are still decorating our present sky. It's amazing, wierd and scary all at the same time. The concept of time is different in space .How wonderful our Creator of the universe is.
Its amazing how they can see that tiny speck in space yet can't seem to find the 9th planet in our solar system EVEN AFTER New Horizons took a picture of it
How does one prove that light doesn't redshift due to losing energy due to moving across space instead of being stretched by expansion of universe. Or are we sure that light is vibration of space?
i’m very mentally and physically ill, so having motivation to keep going some days is extremely challenging. i was once wrongly declared terminal, it’d be extremely hard for me to see the JWST even complete construction. now, most of my health issues are mental, but astronomy keeps me going, because if u told me i’d be able to look at that galaxy, a black hole AND decently understand particle physics id ask u what ouid you’re smoking
It’s actually insane that the universe is so large that we see what objects looked like in the past. Some of those galaxies could have life in them, but we’d never know because they’re expanding away from us at a faster rate than light speed
I am in love with THE SECRETS OF THE UNIVERSE. I don't really comment a lot, but I thought I would be too cruel if I don't mention it. I have watched almost every single video of the channel. I am looking forward to remove the 'almost' from it.
They say energy can not be destroyed, I think even extremely red shifted visible light truly never just disappears, micro or gamma rays is the results which we can't see but can detect and convert into visible imagery...??
At some point the expansion of the universe will redshift light such that the wavelength is larger than the cosmic horizon, and one would need a detector the size of the observable universe to resolve information. So yes eventually the light will be undetectable.
What’s really crazy is we don’t know if any of this is actually correct this is all basically assumptions and theory where we connected the dots to have some type of understanding
100% correct R H. Man wrote the computer programs these telescopes etc use to tell us what they see out there so everything man claims these telescopes "see" may or may not be real. We simply BELIEVE it is real as that to date is the extent of our knowledge. That is why they keep inventing black holes, quasars etc to explain the things they know nothing about yet try to tell us it is all fact. Laughable really.
This world needs new younger leaders. Old ones close to death aren’t scared of death and are making decisions for everyone, we need to focus on space and human expansion and not war within our own planet
@@benjaminraymundo6711 problem is, you are assessing the young appearance hence what it does back in the time, not what it is doing at the moment so its still a young one lol
@@ferdinandhevita649 info travels at light speed. lets say the galaxy send the info called day 1 at 10 L.Y away from earth, it means that day 1 info takes 10 years to travel to earth and what we view at the moment we get the data is 10 years ago of the thing. same principle for any further objects
And just think. After all this time and everything we’ve discovered and all the huge scientific breakthroughs, we’ve probably still only studied 0.000000000001% of the universe. It’s absolutely mind boggling.
(Job 38:1-4) 38 Then Jehovah answered Job out of the windstorm: 2 “Who is this who is obscuring my counsel And speaking without knowledge? 3 Brace yourself, please, like a man; I will question you, and you inform me. 4 Where were you when I founded the earth? Tell me, if you think you understand. (Job 38:31-33) 31 Can you tie the ropes of the Kiʹmah constellation Or untie the cords of the Keʹsil constellation? 32 Can you lead out a constellation in its season Or guide the Ash constellation along with its sons? 33 Do you know the laws governing the heavens, Or can you impose their authority on the earth? (Isaiah 40:25, 26) 25 “To whom can you liken me to make me his equal?” says the Holy One. 26 “Lift up your eyes to heaven and see. Who has created these things? It is the One who brings out their army by number; He calls them all by name. Because of his vast dynamic energy and his awe-inspiring power, Not one of them is missing.
Red and blue shifting is a property of space-time and waves in general. All waves will exhibit a shift in their wavelength respective to their direction and rate of acceleration, and due to the inverse square law the duration of propagation. High gravitational fields and obstacles along the way may work to reduce the wave’s energy and decrease its wavelength, this may result in a much greater red shift than what would have otherwise been detected.
I just learned this in a lecture a couple of weeks back- My explanation won’t be great so sorry about that. It is true that the interstellar medium can result in some reddening due to scattering and absorption. However, we can actually see through this by using different wavelengths. Gas and dust only interact with particular wavelengths of light (I don’t remember exactly where on the EM spectrum this is). So we can see through this by looking at different wavelengths which aren’t affected by this.
@@troops3293The longer the wavelength the farther it can travel without absorption, infrared is what they measure to see through dense gas and dust regions of space.
Crazy to think life could be out there but we wouldn't even know yet, not for a million or billion years... probably will keep us from ever even knowing unless it's in our galaxy
Even crazier when you consider things like filters. Life may be long dead out there. We may get lucky enough to witness a technological civilization, then find out it's been dead for millions of years
My thoughts after learning some examples and what Light year actually is: "That's the past right there. A long long time ago. And we're standing here from their future. Maybe some galaxy have already mashed with milky way and we dont even know about it yet, or maybe earth is already in its apocalyptic stage if we get to see other life forms from other worlds."
So let me get this straight... "God" can create all this, but he couldn't give women the ability to make choices about their own bodies? Christians, your logic is flawed. If God is so powerful he doesn't need you to intervene on "his" behalf.
The most scary thing is the fact that we are seeing the light which actually left the galaxy 13.6 billion years ago. We will never know what it is actually there right now
To me what is of most interest regarding the new James Webb telescope is what it sees at the theoretical moment of the big bang. If it sees mature and old galaxies its goodbye to the big bang theory, and a new infinite universe model being adopted.
Big Bang never happened. You can't get solids from 2 gasses colliding. Besides that, where did those 2 gasses come from if there was nothing before them?
1) NO telescope can see "the moment of the big bang". Light didn't even begin to permeate the universe until several hundred thousand years afterwards. 2) We ALREADY have instruments that can see closer to the Big Bang than JWST can. JWST is mainly an Infra-red telescope, so it can't see as far back in time as a microwave telescope. The Planck Observatory mission in 2009 made the most accurate map of the Cosmic Microwave Background (the "1st light" after the big bang), 370,000 years after the Big Bang. For the same reason that Hubble can't see as far as JWST (the far away visible light has shifted to the Infra-red due to universal expansion), the REALLY far light beyond that has shifted into the microwave wavelengths. So JWST can't see as far "back in time" as a microwave telescope can (like the Planck Observatory did in 2009-2013).
@@beta_cygni1950 1)No telescope can see that far into the past according to the big bang theory. Assuming the big bang theory is correct. 2) The microwave background radiation makes more sense as the limiting temperature of space heated by starlight than as the remnant of an explosion. There is no need for the fantastical inflation theory to fudge away the cosmological problem. the infinite universe model fits the thermodynamic equilibrium we see without any need for fudges.
@@paulsmith1981 Sorry, but anyone who calls the Big Bang "an explosion" doesn't understand it enough to try to dispute the theory. Nothing "exploded". And no, the infinite universe model doesn't solve anything. I suggest that you read about the topic. It sounds like you don't understand it it all.
@@beta_cygni1950 An explosion is a sudden outburst of energy or a sudden increase in the amount. Cosmologist call the big bang an explosion hence the "bang" in the name. Saying, Oh no it doesn't. And, I suggest you read a book. Isn't an honourable exit strategy from a debate.
nice have you noticed though that no matter which galactic video you watch, invariably whenever they show galactic pics they show it in slow-motion and add slow surreal meditative music?
The Antennae Galaxies merging isn’t that unusual, because in fact even our own Milky Way galaxy is merging with the Andromeda Galaxy. It should actually be pretty well known by now.
It's not about the distance that makes it hard to tell what's going on in the galaxy. It's that what we are seeing happened 13.5 billion years ago, or about 9 billion years before Earth existed. The galaxy in question, in theory, might not even exist anymore, but it would certainly currently be much much different than what we are seeing.
Halton Arp proved through his observations that redshift is not solely indicative of objects accelerating away but in fact show that the redshift is intrinsic to an object’s youthfulness. Arp, the colleague of Edwin Hubble, had his telescope time taken away and then drummed-out of his tenure because a science periodical editor declared his observations ‘exceeded his imagination’ and that was it. You need to do your research. Actual scientific, observable evidence that contradicted the established mathematical model was excised from the textbooks by conviction to a belief. This is NOT science, this is religion.
@@itriedmany factually wrong, that is not how the scientific process works. People who follow that philosophy of science end up drawing wrong conclusions and hinder progress. Stop following the dead theories of a dead man.
@@hexium_ ... science is ever open to new theories and does not establish itself on faith... yes, it can take decades for new discoveries to be accepted because of established teachings but, logic always prevails in the end with science... so, yes, you may be correct
@@azizaamin7867 Sister as far as I know Light years mean the time that light takes to travel So 13.5 billion light years mean that light took 13.5 billion years to travel to us Meaning we are seeing an image of it which was 13.5 billion years ago Correct me if I am wrong Assalamualaikum
I've been living my life with science and faith. It's exciting to see what's out there and discover more. However there's a beauty and sadness to it. And at the end of the day, who am I to say that we're not alone.
@@SahilP2648 and how does that let us count such great distance? I think a video would be interesting how they figure it out. I know things that are closer they use mathematics to figure the distance but at a certain distance they use the red light, but how does that translate into such and such light years away.
@@AB-mg5sx search on RU-vid about 'Doppler effect' which relates to sound then search about 'Red shift'. Both are the same in principle. Visible light gets shifted to larger and larger wavelengths the farther away the object is moving from us. That's the reason why JWST has the biggest sensor designed around infrared light.
Just because you detected the red shift doesn't mean it's still there AND there is no proof that the vacuum of space is uniform. If the vacuum is lower in some sections then the light will take longer to pass through it.
I have to say I've never bought this theory about what we think about the universes "beginning". We just sent up this monster that can see things we couldn't see before because it is so far away but we are supposed to accept the idea that they know the universe has its outer limits. I think the simpleton mind of the sons of man have to explain things as having a start and an end. The idea that the universe could have existed forever isn't even talked about. So how much " dead nothing exists? I mean if the universe is expanding it has to occupy space that had nothing in it so it can grow. Then they will say that on the outer edges it grows quicker, something attributed to this " big bang". Without proof of an "edge" to the universe we pill on to a theory that could be flawed and those limitations in thinking will hold back sons of man from discovering the true nature of the cosmos.
The universe doesn’t have an edge though (at least we think so), it’s infinite. It has an “edge” because that’s the maximum distance we can see. That’s why it’s called the observable universe. Beyond the edge is likely the rest of the universe. But since light takes forever to travel and the universe is expanding. We’ll probably won’t see far past it. I guess you could say the universe did exist forever. The Big Bang wasn’t an expansion, it’s more like the universe just appeared.
One of the untested assumptions in all of this is that a photon can travel for billions of years without losing any of its original frequency , the only way its frequency can change is through doppler effect. This assumption cannot be tested and yet its being accepted as a fact.
Photon has no mass. Since expansion is faster than the photon, forever, or at least as long as there is space to travel in. Given that there are objects of mass in space, this path will curve, so I guess eventually it has to contact the mass, unless the mass moves beyond the light cone (due to expansion), then we are back to as long as expansion allows.
@@BatMan-oe2gh yes , that's the untestable assumption that's being treated as fact. Here's the problem , if photons aren't the perfectly massless perpetual motion machines that the Standard Model says they are then "dark energy" disappears.
@@sadham2668 It's impossible to test . Photons appear to have no mass , but we can't verify if they are truly massless or if the have so little mass we just can't measure it. If they have any mass at all it would mean their frequency would slowly drift down over millions of years , basically adding extra red-shift to distant galaxies and causing an error in our calculations. That error would look just like "Dark Energy". So there is either some unknown force ripping the Universe apart or the Standard Model is wrong about photons having absolutely no mass. The physics community is so wrapped up in the Standard Model most of them won't even consider that it might be wrong.
The universe is 13.8 billion years old, wouldn't the galaxy need to be moving 3× the speed of light relative to us when factoring the expansion of space?
We could be looking at planets that have intelligent life but are so far away we’re viewing the light from the planet 1000’s of years in the past before they became an advanced civilisation. And they could be doing the same to us. But both of us can’t see our planets in the present day.
Amazing and beautiful are the cosmos. I think the universe it too big for any 1 civilization to have mapped and traversed it. With galaxies already so huge as they are, TRILLIONS make it likely impossible. I get so astonished and mesmerized looking to the stars, the cosmos so vast, dark and beautiful, yet so bright to be near the stars. Trying to imagine and comprehend the distances between as I look to the night sky, bewildered and mind boggling. They're so bright and huge celestial bodies up close, yet mere glimmering specks of light to us being that they're so far away. And the fact of the time it takes the best seemingly instant light taking so many years to get here being onky few in small bubble area to us amongst the so many times more within the Galaxy. But even trying to imagine the distances and even greater numbers of galaxies simply within the 'visible' universe with many many times more than stars within our Galaxy and all galaxies. And the galaxies so big it's like they've been called 'island universes'. Absolutely no way we are alone.
+13 billion years, such mind boggling number. Countless civilizations have risen and fallen since the beginning of time. Yet here we are, the Human Civilization looking for the truth of the universe. Why can't everyone just be at peace? And unite together to unravel the mysteries of the universe instead of killing and exploiting each other for some self interest and benefits? Can't they see that it is there is a bigger world out there? Why are we all such dumb humans that is killing our own for our own greediness? 😔
So are they finally going to admit that there is another side to the ‘Big Bang’? That’s the youngest galaxy on the other side of the boom boom. (So scientific! Lmao!)
@@WitmanClan That is the problem, people have been indoctrinated to live in their imagination. They don't care about reality anymore, they don't care about what they eat, or anything else they consume. They consume so much the entertainment begins to consume them.
It's actually just a reflection of our own milky way Galaxy as it was being Born at the beginning of our understanding in the timeline of reality that only we ( the human race) can acknowledge in such a basic understanding or time simply put there was no beginning and there will be no end.
