this post was submitted on 03 Oct 2024
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If gravity is curved spacetime, why do light rays not get pulled down to the Earth? (zerobytes.monster)
submitted 1 month ago by [email protected] to c/[email protected]
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The original post: /r/askscience by /u/Leipopo_Stonnett on 2024-10-02 20:09:06.
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[–] [email protected] 1 points 1 month ago

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They do.

Not all the way down, but mass bends light. It's called gravitational lensing.

And the effect for something with the mass of the Earth is relatively small.

If memory serves, a black hole with the mass of the Earth would have an event horizon about the size of 9 millimeters.