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Emperor_Kael t1_jam7z83 wrote

Are photons affected by gravity like objects with mass? Or is it 'simulating' gravity and moving along the curved spacetime.

In Einstein's general relativity, he said that there is no difference between an accelerating frame and a gravity well. A photon will appear to curve down in both cases.

How does this suggest curved spacetime and not gravity's attractive effect on the photon?

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Luenkel t1_jamnu5i wrote

"Being affected by gravity" and "moving along curved spacetime" are the same thing. That's the whole point of general relativity: gravity can be described as objects following geodesics in curved spacetime.

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