3 ms·

How would > that we literally can't calculate it (the age of the universe) anymore crash with our observation of the CMB? I don't see how us being unable to

• hnuser123456 2y ago
  The CMB suggests we get a picture of the entire early universe. However, other things are suggesting we might not be seeing the whole universe just by looking as far away as possible. It could be we can see some regions on the CMB that have already expanded outside of our observable universe. These regions aren't just "even fainter and we need a better telescope", they're "the last photon from that region that will ever reach us came and left billions of years ago." Therefore, there might not be one singular hubble constant, there might be two. One that applies to our local observable universe, and one that applies to the entire universe. It could be that the universe is 26 billion years old: https://academic.oup.com/mnras/article/524/3/3385/7221343?login=true https://academic.oup.com/mnras/article/524/3/3385/7221343?lo... And because at great enough distances(/times), expansion is faster than light, and we simply can't see a significantly different epoch of the universe just by looking deeper.