How can we be sure if Universe has exploded with big bang? Can't it be implosion?
4276
Did the Big Bang happen at a point?
95674
Expansion of the Universe, will light from some galaxies never reach us?
125620
How do we know for certain that space is expanding?
95295
Is the Universe Past-Eternal?
115517
How could we know that the relativistic curvature of universe is intrinsic?
41740
What is the evidence that dark energy exists? (as of 2020)
101201
How do we know the size of the universe?
134905
What was the entropy of the universe at the time of the Big Bang?
144935
Question regarding the validity of the big bounce
107971
Hubble's law and conservation of energy
63414
What are the pieces of evidence that universe is expanding?
96564
Is it valid to apply Einstein's Relativity to scenarios involving expansion of space?
73648
Why does a supernova explode?
107475
What happened to warp drives destroying the universe?
133194
Can we prove reality?
24669
Time dilation at the Big Bang
9760
What is the safe distance to a supernova explosion?