What is our understanding of what our (i.e. observable) universe has expanded into?
4276
Did the Big Bang happen at a point?
14188
How does dark energy allow the universes expansion to accelerate?
110030
Superluminal expansion of the early universe how is this possible?
61329
Has everything we see happened in the past?
136212
How is the expansion of space itself explained in LQG?
70008
Virtual Particles real? Virtual particles create a universe?
15538
If the Universe is expanding, how is that galaxies run into each other?
101978
Are the implications of an infinite universe necessarily so unsettling
37587
What has been proved about the big bang, and what has not?
63414
What are the pieces of evidence that universe is expanding?
134905
What was the entropy of the universe at the time of the Big Bang?
73935
Why the temperature is getting lower when the universe is expanding
69464
Do we know why there is a speed limit in our universe?
85665
Schwarzschild metric in expanding Universe
139471
What if the size of the Universe doubled?
50876
Is space expanding equally in every direction?
41740
What is the evidence that dark energy exists? (as of 2020)