Gravity and Space
The gravitational effect between two objects of mass seems apparent. Even uncomplicated until you start to think about it in detail, but gravity is said to warp Space which I assume can be attributed to mass. The assumption being that the effect is an attribute of mass.
Generally there is no clear explanation of what Space is. It's this, it's that, know one really knows, yet it expands and warps.
When a photon is affected by gravity we can say that it's velocity gives it just enough ma
Photons have no mass, and even if they did, the effect would not be due to velocity, since all photons travel at c. They have energy and momentum, owing to their frequency (or wavelength).
The effects on our observations is real, but spacetime is a coordinate system. Like latitude and longitude on a globe, the coordinate system is not flat, it is curved, because that's the proper coordinate system to use to describe the very real effects. When you look at them on a flat map (with a proje