Can someone explain to me what the phrase "Everything moves through space-time at the same speed" means?
31825
Why are objects at rest in motion through spacetime at the speed of light?
138834
A question about special relativity theory
76819
How does "warp drive" not violate Special Relativity causality constraints?
119953
What is the meaning of speed of light $c$ in $E=mc^2$?
102908
Explaining to an 8-year-old why nothing can travel faster than light
20698
What's the difference between space and time?
24664
What does it mean for objects to follow the curvature of space?
17152
Do all massless particles (e.g. photon, graviton, gluon) necessarily have the same speed $c$?
9016
How can time dilation be symmetric?
81663
Why does gravity travel at the speed of light?
45888
Minkowski metric -- why does it follow from the constancy of the speed of light?
60364
Universe Expansion as an absolute time reference
151086
What bends fabric of space-time?
140184
Why all theories are Lorentz invariant?
56065
How can the speed of light be a dimensionless constant?
4132
What is the closest general-relativistic equivalent of a "time slice"?
97246
Can gravity be interpreted as the acceleration of spacetime towards an object?