All Questions
4
questions
0
votes
2
answers
88
views
"What" was expanding during the Inflationary epoch?
I know, space. But in my opinoin, space makes only sense if there is something that experience things like position and distance. A universe without anything that require position and distance to ...
- 793
1
vote
0
answers
60
views
Why is the age of the universe $=D/v$, despite that $v$ is not constant with time?
I am watching a series of lectures by the Noble prize laureate Brian Schmidt and Paul Francis and in this episode (at 4:20) they make the simple assumption that a galaxy receding from us due to the ...
- 157
4
votes
1
answer
313
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Hubble's constant measured by observer approaching light speed
I recently read about expansion of the universe and I can't figure out if Hubble's law (and other models of expansion of the universe) is compatible with the theory of relativity.
My question is: In ...
- 149
0
votes
3
answers
152
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Observing a point 13.82b ly away, 1b years ago
I understand that we can observe far away galaxies to get an idea how the universe looked like in the past.
Assuming the universe is 13.82b years old, would it be correct to say that if we looked at ...
- 153