What proof do we have that space is expanding?
125620
How do we know for certain that space is expanding?
99374
Can we observe an edge of the universe?
65001
Universe from nothing?
3103
How do we know the universe is expanding, and not that its contents are shrinking?
145466
Is this a valid mathematical proof?
152493
Is an expanding map on a compact metric space continuous?
60364
Universe Expansion as an absolute time reference
13143
Why doesn't planet Earth expand if I accelerate upwards when standing on its surface?
41617
If a $C^1$ map $f:\mathbb{R}^{n}\rightarrow\mathbb{R}^{n}$ is expanding ($\|f(x)-f(y)\|\geq\|x-y\|$), which of these must be true?
35682
How to add blank space in proof environment without changing the position of the word "proof"?
29426
Is there a proof of existence of time?
80804
What evidence do we have that CMB is the result of the Big bang?
102370
At what speed does our universe expand?
40150
Will acceleration rate of expansion of space become faster than speed of light?
134396
Could the acceleration of universe expansion be caused by gravity itself?
121192
Proof of Lorentz contraction?
58404
Does vacuum (empty space) exist?