Anonymous at Thu, 13 Feb 2025 17:06:26 UTC No. 16584894

to be more certain, recently Webb spotted 12,5bln yo galaxy(almost at the center of big bang), so, why it won't turn 180 and zoon on the opposite area?

Anonymous at Thu, 13 Feb 2025 17:40:53 UTC No. 16584914

>zoom
Both scopes have a fixed focal length dum dum

Anonymous at Thu, 13 Feb 2025 17:47:00 UTC No. 16584920

>>16584870
>>16584894
Expansion and age isn't directional. Turning 180 degrees just looks at a different equally old part of the galaxy.

Anonymous at Thu, 13 Feb 2025 18:04:50 UTC No. 16584936

>>16584920
>>16584914
Wat

Anonymous at Thu, 13 Feb 2025 18:34:48 UTC No. 16584957

>>16584936
lol you're dumb, that's 3D->2D universe made 3D again with the passage of time as 3rd dimension. I can't even

Anonymous at Thu, 13 Feb 2025 18:46:20 UTC No. 16584972

>>16584957
ru trippin or what, there's clear image of the universe(a segment of it) that's how it looks right now, you made up some weird theory of 3d-2d. Webb is directed towards the center now, few days ago it captured red dragon galaxy which is 300mil yo very close to the center of bb, now it needs to look back, where older galaxies are, on the edge of expanding bubble of universe, older galaxies - bigger chances finding super developed life

Anonymous at Thu, 13 Feb 2025 19:25:49 UTC No. 16585011

anything that is expanding has a center of expansion, wtf is this bs "bib band was not an explosion"? then wtf was it? What's that picture then?

Anonymous at Thu, 13 Feb 2025 19:27:10 UTC No. 16585015

>>16584972
Any telescope is looking back in time because the speed of light is limited. Look at a distant enough galaxy and you see it as it was when the universe was a few hundred million years old. But if you look in any direction you will see old galaxies. If you could instantly visit one of those galaxies now, it would be just as old as the Milky Way.
There are deep fields in many different directions in the sky (GOODS North and South, COSMOS, EDS, UDS), they all host early galaxies.
There is no direction of the big bang. The big bang happened everywhere. There is no special direction. One can see this in the cosmic microwave background, which is the earliest light in the universe. It comes to us from all directions, covering the whole sky with small deviations.

>>16584936
This figure which is confusing you is plotting time along the x direction, not space. It shows the evolution of the expanding universe with time. It is an illustration, it is not how the universe looks.

Anonymous at Thu, 13 Feb 2025 19:57:36 UTC No. 16585047

>>16585015
this is painful to read,
>The big bang happened everywhere
I really hope this is not true, because it ruins the comfy, logical model of a universe, that appeared from a super dense point, that exploded exactly like a firework does, and we are somewhere in between from the center and outer sphere of this firework, Lemaitre imagined it this way. "Explosion, big bang happened everywhere" is unimaginable, how can an explosion happen everywhere? How can it be put into a simple visual illustration? If BB happened everywhere, then the center is everywhere, every dot in universe is its center, but then there shouldn't be young\old galaxies, they're all of the same age, if we'll look at milky way while standing on 300mil yo galaxy, then the milky way should be 300 mil yo too, whixh makes no sense

Anonymous at Thu, 13 Feb 2025 20:28:56 UTC No. 16585069

>Lemaitre imagined it this way.
That's not what he proposed. In an expanding universe all distances are expanding. Say a galaxy is 1 million lightyears away, expansion means that galaxy is moving away from us at 20 kilometres per second. If the distance was 2 million lightyears it would be 40 km/s. All distances are expanding, stretching, in proportion to their length. Note that in reality it needs bigger scales to dominate over gravity. If you run the clock backwards, these distances contract. And if you go back the galaxies would get closer and closer together. At some point all these distances would be all be zero. That is Lemaitre's singularity, the big bang. In modern cosmology people don't assume there was a singularity, just a dense early state.
>"Explosion, big bang happened everywhere" is unimaginable, how can an explosion happen everywhere? How can it be put into a simple visual illustration?
You can think about expansion as an infinite rope with beads on it. If the rope stretches the beads get further apart, every unit of the rope stretches. There is no center. This is similar to metric expansion, but it happens in 3D.
>If BB happened everywhere, then the center is everywhere, every dot in universe is its center, but then there shouldn't be young\old galaxies, they're all of the same age
Again, this is due to the time it takes light to travel. We see a galaxy as it was 300 million years after the big bang because the light has been travelling for over 13 billion years. We see an old image, because it's so far away. It's like if an alien was listening to radio signals from the Earth. If they were 50 light years away, they would hear radio transmissions from 50 years ago.
>if we'll look at milky way while standing on 300mil yo galaxy, then the milky way should be 300 mil yo too, whixh makes no sense
It would appear that way yes.