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Podcast: Travelers In The Night
Episode: 60E-72-Could Space Aliens Detect Life On Earth
Description: If a space alien were to peer around the edge of the Moon from its base on the far side it could see our lights at night and perhaps even the smoke from our factories during the day. It could also pick up radio and TV signals created by humans. An interesting question is could a space alien detect planet Earth and learn something about it if it were so far away that our Sun were only a tiny point of light in its night sky?