Quote:
Originally Posted by ClunkintheUK
True, since gravity is indistinguishable from any other form of acceleration. That definition however makes little sense of why light rays are bent by massive objects. It's also why I said what causes the gravitational effect.
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because they're not bent directly by massive objects.
they're bent by the result of massive objects, they are bent round that curvature of spacetime that massive objects cause
or at least that's the only time it's visible.
If we are truly accelerating towards the planet (or it's accelerating up to meet us) then that only makes sense against a moving (or still depending on reference frames again, moving in relation to other parts of space) background which is what light is travelling through.
That's actually part of what I like about the theory that it does deal with that so neatly and why all objects no matter how small attract each other, because they all deform space a little.