What existed before Big Bang?
4087
Did spacetime start with the Big bang?
70208
Any examples of life forms on Earth that could have survived on Mars or Moon?
41209
Does matter with negative mass exist?
64715
How is it possible that we see light from shortly after the big bang?
95879
Other explanation for cosmological redshift?
22682
If everything in the universe doubled in size overnight, would it be noticeable?
129816
Experimental observation of matter/antimatter in the universe
122960
Can a wormhole be created if it has not always existed?
12608
Is it possible that there are still gravitational waves of the big bang?
22918
What came first, the $\forall$ or the $\exists$?
65001
Universe from nothing?
78916
Particles entangled after the big bang
113304
Universe expands ... compared to what?
95295
Is the Universe Past-Eternal?
26354
Is anti-matter matter going backwards in time?
63414
What are the pieces of evidence that universe is expanding?
61329
Has everything we see happened in the past?