If something is not moving in space, is it moving on the time axis at the speed of light?
31825
Why are objects at rest in motion through spacetime at the speed of light?
98593
Will speed of light in any denser medium will be same for all the inertial frame in that medium?
19850
Why is the speed of light defined as 299792458 m/s?
26363
How does faster than light travel violate causality?
40150
Will acceleration rate of expansion of space become faster than speed of light?
54020
Does a moving object curve space-time as its velocity increases?
50651
Does special relativity imply that time dilation is affected by an orientation of clocks?
47242
Time dilation due to change in speed
89463
Since the Earth is moving through space, do we experience time dilation?
81880
How can a photon have no mass and still travel at the speed of light?
12597
Does the speed of medium affect the path of light?
475
Would time freeze if you could travel at the speed of light?
132109
Where in, Einstein’s "On the Electrodynamics of Moving Bodies" (Relativity), is “Time” reasonably shown to exist, or why is it a valid assumption?
56005
Speed of light travel
133294
Are gravitational time dilation and the time dilation in special relativity independent?
8367
What do physicists mean when they say "speed of light"?
4132
What is the closest general-relativistic equivalent of a "time slice"?