Extra mass due to near light like speeds
55971
Why does the (relativistic) mass of an object increase when its speed approaches that of light?
341
How is light affected by gravity?
6845
What if we could give photons some mass?
13786
A question in Special Relativity
10781
Accelerating particles to speeds infinitesimally close to the speed of light?
123854
Would time speed up near a large body of negative mass relative to observers in micro gravity?
105142
What does general relativity say about the relative velocities of objects that are far away from one another?
37941
Can light travel slower than the maximum?
27825
Bending of light - photon's inertia instead of mass
57608
Approaching speed of light: why do objects appear further away in front of me?
136473
Is there a scalar acceleration?
80291
Relativistic velocity addition from time dilation
26670
Explain how (or if) a box full of photons would weigh more due to massless photons
50575
Collisions in space/vacuum
17835
Does compression of matter increase gravity?
39399
Will free-fall object into black hole exceed speed of light $c$ before hitting black hole surface?
51589
Can virtual particle have mass?