If nothing can travel faster than the speed of light, how can there be parts of the universe we can't see?
5930
Why is the observable universe so big?
8367
What do physicists mean when they say "speed of light"?
76637
Why aren't particles constantly "measured" by the whole universe?
132106
Why does the speed of light $c$ have the value it does?
115786
Speed of gravitational waves and light
85582
Why aren't all photons virtual particles even in the "vacuum" of empty space?
12267
(Almost) double light speed
118483
Why can't we see gases?
127383
Speed of light in general relativity
95674
Expansion of the Universe, will light from some galaxies never reach us?
115239
Is the Speed of Light an universal spacetime constant, the velocity of electromagnetic waves, or of photons?
99374
Can we observe an edge of the universe?
72416
The universe appears to have a lower bound in the time dimension, why not an upper bound?
64715
How is it possible that we see light from shortly after the big bang?
58728
Why does the speed of light in vacuum have no uncertainty?
120621
Speed of Dark experiment, does it *really* travel faster than light?
99342
Given that matter cannot escape a black hole, how did the big bang produce the universe we see today?