If photon is massless, then how can it interact with gravity?
24863
How can gravity affect light?
76779
Are there bound states from light-light or gravity-gravity scattering in general relativity?
61017
What happens with the force of gravity when the distance between two objects is 0?
88019
How can mass affect spacetime?
155738
Can light be a spinor?
145003
How can a point-like particle "feel" gravity, if locally the curvature of spacetime is always flat?
119639
Do photons bend spacetime or not?
115490
Is particle superposition reflected in the particle's gravitational footprint?
64286
How can gravitions exist without violating GR?
56065
How can the speed of light be a dimensionless constant?
152586
Does a photon have an amplitude?
96324
Does everything with mass or energy have a gravitational pull?
74367
Newtonian mechanics: massless particles
127371
How do gravitons impact on general relativity?
148029
What if Force was not Mass times Acceleration?
87598
Can we define the effective mass or the moving mass of a photon?
65533
Does gravity slow the speed that light travels?