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PBS Space Time
Why Haven't We Found Alien Life?
Season 2
Episode 7
With millions of Earth like planets around sun like stars in our galaxy alone, why don't we see intelligent alien life? Or any other life for that matter? It gets especially weird when you factor in new scientific revelations that life on Earth occurred crazy fast! So if you want to help us theorize on the real reasons we haven't found alien life, you should watch today's episode of Space Time!
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17:25
So you’ve decided to jump into a black hole...
12:51
We only recently figured out where cosmic rays are coming from.
13:28
Black hole complementarity may force us to rethink what it means to say that it exists.
20:15
To travel the stars without faster than light travel we’re going to need a generation ship.
15:36
The Moon: humanity’s first destination beyond our atmosphere.
14:28
Is our 3-D universe is just the inward projection of an infinitely distant boundary?
14:12
What if aliens are deliberately keeping quiet for fear that they might be destroyed?
14:44
The terrible singularity at the heart of the black hole may be no more.