[Q&A+] Why Is The Universe Not 13.8B Light-Years Wide? | Q&A 444
BONUS QUESTION STARTS AT 13:58
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Why is the Universe not 13.8 Billion light-years wide? Could a black hole possibly consume the entire Universe? Where did all the metals come from? And in Q&A+, what's the best part of my job here?
00:00 Intro
00:26 [@anonylity_4798] How is the Universe bigger than it's older
05:33 [@WendellBroadwell] Will the entire Universe inevitably fall into a giant black hole?
11:18 [@davidpayton7838] Where did all the heavy metals come from?
13:58 [@doogle4144] Do I prefer writing text articles for UT or being in front of a camera?
17:08 Perseids
Comments (4)
What happens to the starts that got kicked out?
Fraser, I think you missed the main point I would have tried to explain to the person about the size of the universe. Space itself is expanding and so the size of the universe (between any two points) is expanding at a rate that is faster than the speed of light. Since there are stars that we have seen that are nearly 30 billion light years away from us, we know that the size of the visible universe is much larger than the 13.8 billion light years since the CMB was emitted. I think your fog-iverse analogy doesn’t bring in the expansion of space itself so it didn’t fully answer the question. I am not sure how I would explain this to a 5 year old, but I might think about using a stretchy sheet and flashlights….
Hi Fraser,any more news on exciting news that scientists have found that Betelegeuse Star has a companion star, called Betelegeuse ' B ' ? Any new photos etc ?
For a Q show: Could we observe aliens & their technology evolving faster than us or vice versa due to time dilation & their relative speed compared to us?