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If light has no mass how can a black hole pull it by gravitational force?
I have a question. If light has no mass, how can a black hole pull it by gravitational force?
That's a great question! While light may have no mass, it still has momentum and energy, and both of these things can be affected by gravity. When light passes close to a black hole, it is actually bent and redirected by the strong gravitational field, even though it has no mass.