What does spacetime interval really mean?
43724
What do spacelike, timelike and lightlike spacetime interval really mean?
36619
Effect of space time relativity on the age of the universe?
4132
What is the closest general-relativistic equivalent of a "time slice"?
111371
What really is Spacetime?
35883
Why do objects follow geodesics in spacetime?
23399
Nature of spacetime 4-vector and tangent space?
53952
What does $\frac{1}{\sqrt{1 - \frac{v^2}{c^2}}}$ mean with respect to special relativity?
151086
What bends fabric of space-time?
21127
Interval preserving transformations are linear in special relativity
104255
Can we know the fundamental nature of space and time?
82330
What does one second after big bang mean?
40739
Naive visualization of space-time curvature
76118
What's the component interval?
6727
Is spacetime discrete or continuous?
93336
Understanding time crystals
60364
Universe Expansion as an absolute time reference
81793
Freeman and Tukey interval