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[narrator] Estimates of how many
Earth-like planets will develop life vary. So, let's say even with this new
scientific confidence, it's just one out of every thousand. That means every tenth grain of sand
on Earth represents a planet with life on it. And if just one out of every thousand
of those planets develop intelligent life, that's a quadrillion intelligent alien
civilizations in the universe. 10,000 just in our galaxy. Extraterrestrial life also has time
on its side. Earth is only about a third
as old as the universe
Earth-like planets will develop life vary. So, let's say even with this new
scientific confidence, it's just one out of every thousand. That means every tenth grain of sand
on Earth represents a planet with life on it. And if just one out of every thousand
of those planets develop intelligent life, that's a quadrillion intelligent alien
civilizations in the universe. 10,000 just in our galaxy. Extraterrestrial life also has time
on its side. Earth is only about a third
as old as the universe
Full Transcript
00:00:01.000 --> 00:00:05.129
[narrator] Estimates of how many
Earth-like planets will develop life vary.
00:00:05.546 --> 00:00:08.466
So, let's say even with this new
scientific confidence,
00:00:08.549 --> 00:00:10.051
it's just one out of every thousand.
00:00:10.843 --> 00:00:13.596
That means every tenth grain of sand
on Earth
00:00:13.763 --> 00:00:16.099
represents a planet with life on it.
00:00:16.599 --> 00:00:21.312
And if just one out of every thousand
of those planets develop intelligent life,
00:00:21.396 --> 00:00:25.691
that's a quadrillion intelligent alien
civilizations in the universe.
00:00:25.983 --> 00:00:28.277
10,000 just in our galaxy.
00:00:29.999 --> 00:00:33.449
Extraterrestrial life also has time
on its side.
00:00:33.908 --> 00:00:36.536
Earth is only about a third
as old as the universe.
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Movie Summary
A documentary series that looks to explore the big questions of today.
