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This galaxy in particular must be one of the first galaxies ever formed. If galaxies are more mature than initially thought, what does this imply about our prev
by scryers_bloom 2y ago
This galaxy in particular must be one of the first galaxies ever formed. If galaxies are more mature than initially thought, what does this imply about our previous models and imply about what might actually be happening?
- hnuser123456 2y agoThere seems to be a large region of the universe, beyond furthest edges of the observable, but "in front of" the CMB, that is already outside of our past light cone due to expansion of the universe.
- hnuser123456 2y agoTo add, Earth is only ~4.5 billion years old, the universe is 13.7 and possibly double that, so earth is only 1/3 the age of the universe. It took a lot of big stars going supernova to pollute the galaxy with enough dirt to make rocky planets, and in all that meantime, everything has been flying apart, with a significant chunk of it already so far away and expanding away even faster, there is measurable difference between the observable universe and the "whole universe."