Physics, 07.04.2020 20:17 heberavilesramirez52

An advanced civilization is found on a planet 1000 light years away. If we send out a radio wave today, what is the minimum amount of time it would take for us to hear back neglecting the relative motion between the planet and the Earth?

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An advanced civilization is found on a planet 1000 light years away. If we send out a radio wave tod...