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Alien life: are we about to find it?

The thought of finding alien life has fascinated people since the time of the ancient Greeks—but developments in astrobiology could be about to turn this possibility into reality. How do you hunt for life beyond Earth—and might this be the decade when we find it?

00:00 - Is there life beyond Earth?
00:56 - How has the search for life evolved?
02:36 - What signs of life are scientists looking for?
03:48 - What are biosignatures?
04:28 - How to find intelligent life
06:03 - How telescopes today have improved our search
07:52 - Expanding the search beyond Earth

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