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Devac  ·  1267 days ago  ·  link  ·    ·  parent  ·  post: A sober discussion: Aliens on Earth

All of that is true, yes. I'm sorry I don't have an off-hand response, but I'm trying to use Einstein-Maxwell equation to check if we could see something propagating <c in the gravitational curvature from, say, the point of tachyon creation. Unfortunately, with less-than-stellar intuition on my part.