Physics, 24.04.2020 05:02, tikirawallace

Suppose an intelligent society capable of receiving and transmitting radio signals lives on a planet orbiting Procyon, a star 95 light years away from Earth. If a signal were sent toward Procyon in 1999, what is the earliest year that Earth could expect to receive a return message?

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Suppose an intelligent society capable of receiving and transmitting radio signals lives on a planet...