Observation of light bending spacetime
90122
Is there experimental evidence that massless particles such as photons attract massive objects?
147647
Spacetime around a massive cylinder
113772
How to measure the curvature of the space-time?
20960
Seeing the shadow of a black hole
1537
Is a photon "fixed in spacetime"?
88879
Time dilation as an observer in special relativity
121914
Unitary representations of the diffeomorphism group in curved spacetime
143038
As light from a star spreads out and weakens, do gaps form between the photons?
71342
Physical interpretation of the Reissner-Nordstrom metric
66972
Is there any way to measure the one-way speed of light?
10178
How can mass bend spacetime, if there's nothing to bend?
136573
Gravitational lensing or cloud refraction?
43480
Visualizing the 4th dimension.
58042
Redshifting of Light and the expansion of the universe
10209
How to show the spacetime interval is invariant in general?
114449
Gravitational slingshot of light using a black hole/massive object
1206
GR. Einstein's 1911 Paper: On the Influence of Gravitation on the Propagation of Light