Is the curvature of spacetime in General Relativity instantaneous?
2331
How fast does gravity propagate?
768
Is electricity instantaneous?
114454
Acceleration in special relativity
146976
Is the gravitational constant $G$ a fundamental universal constant?
33979
How does the curvature of spacetime induce gravitational attraction?
4132
What is the closest general-relativistic equivalent of a "time slice"?
54020
Does a moving object curve space-time as its velocity increases?
125709
How can there be really any instantaneous velocity?
76894
Why is spacetime not Riemannian?
141320
Particle energy in general relativity?
90777
Can a black hole form due to Lorentz contraction?
9463
What is the proof that the universal constants ($G$, $\hbar$, $\ldots$) are really constant in time and space?
122357
Discreteness of Spacetime and Violation of Lorentz symmetry
75788
Is spacetime absolute?
137796
Local translations in curved spacetime
136936
How do you tell if a metric is curved?
60751
General relativity and the conservation of momentum