What will we as the human race say to the aliens when we hear them physically? There is actually a group of scientists called Seti, aka Search for Extraterrestrial Intelligence. Seti started as one man using one telescope dish in 1959. Today computers are used to sift through the cosmic radio traffic, flagging up to astronomers any potential calls from extraterrestrial life. For decades we've been sending signals - both deliberate and accidental - into space, and listening out for alien civilizations' broadcasts. But what is the plan if one day we were to hear something?
Find out by reading the article here: Alien hunters: What if ET ever phones our home?
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