Gravity has to move at the same speed as light. If it didn't it would cause time... | Hacker News

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		ars on Dec 15, 2011 \| parent \| context \| favorite \| on: The Milky Way's black hole may spring to life in 2... Gravity has to move at the same speed as light. If it didn't it would cause time paradoxes.

bakedbeing on Dec 15, 2011 [–]

Ah of course, a theoretical graviton being a massless particle. That's what I get for not having a wee Google first.

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