Quote:
Originally Posted by August
What would it take to broadcast a signal that can be read on a distant planet? Power obviously. Lots and lots of power, but in what form?
Radio Frequency, Light, Microwave?
No matter what form one uses signal attenuation is gonna be a bear.
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Radio and Microwaves
are light.
Space is a wonderful medium for radio signals. Those involved in SETI seem confident that the signals we sent on purpose to some near by stars could be read if someone was there. Even just a basic repeating signal (like prime numbers) or other unambiguous sign (massive nuclear blasts or a fusion/fission reaction with increasing color shift beyond what is normally observed) would be clear signs of intelligent life.
