Is the speed of light the speed limit or does light just happen to travel at the maximum speed?
14036
What is so special about speed of light in vacuum?
14922
Do tachyons move faster than light?
102908
Explaining to an 8-year-old why nothing can travel faster than light
69464
Do we know why there is a speed limit in our universe?
67127
Does the speed of light vary in non-inertial frames?
93598
Is it proven experimentally that the speed of causality (light) is the maximum speed?
27593
Why is travelling around the speed of light a problem?
18799
If I run along the aisle of a bus traveling at (almost) the speed of light, can I travel faster than the speed of light?
25121
Is it really possible to break the speed of light by flicking your wrist with a laser pointer?
137951
What changes occur while an atom approches the speed of light?
20037
Do photons have acceleration?
132106
Why does the speed of light $c$ have the value it does?
20427
Is there an infinite amount of wavelengths of light? Is the EM spectrum continuous?
38865
How can a Photon have a "frequency"?
99735
Are there any theoretical limits on the energy of a photon?
2154
Why doesn't gravity speed up light?
40150
Will acceleration rate of expansion of space become faster than speed of light?