How big is the universe 1 second after the Big Bang?
2790
Can space expand with unlimited speed?
70501
How fast is Earth moving through the universe?
72416
The universe appears to have a lower bound in the time dimension, why not an upper bound?
112408
What is the theoretical limit for farthest we can see back in time and distance?
22682
If everything in the universe doubled in size overnight, would it be noticeable?
21084
Size of the universe
101201
How do we know the size of the universe?
12267
(Almost) double light speed
95295
Is the Universe Past-Eternal?
117108
Is the Universe being dragged into a singularity rather than expanding?
112411
What happens when a photon reaches the "edge" of the universe?
51742
What is the curvature of an empty universe?
4132
What is the closest general-relativistic equivalent of a "time slice"?
119336
Zero energy universe
124797
What is the speed of time?
65985
How can the universe by infinite when it has known start and finite time since?
142611
How fast is the Cosmic Microwave Background Radiation (CMBR) changing?