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Originally posted by CaptainBeno
I guess with a target area that big to look at something, at least something should show up?
"Consider the fact that you could've looked at the Earth for four billion years with radio antennas - here was a planet that's clearly in the habitable zone, has liquid oceans, and has an atmosphere - and yet unless you had looked in the last 70 years and were close enough, you wouldn't have found any intelligent life," he said.
"The fact that we look at one star system and don't find a signal doesn't tell you that there's no intelligent life."