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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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Season
15:14
Is Dark Energy Getting Weaker?
16:08
Here’s the story we like to tell about the beginning of the universe.
17:44
We’ve never seen a TDE in the Milky Way, but we’ve seen them in distant galaxies.
16:51
Let’s talk about quantum gravity experiments that can be done here on Earth!
19:25
What if gravity isn’t weirdly quantum at all, but rather … just a bit messy?
17:02
Have we reached the end of the line of discoverable elements?
15:32
Can we change the color of a black hole?
18:26
Learn about Nobel laureate Roger Penrose's idea of how consciousness is caused by quantum processes.
16:28
Faster than light travel may produce gravitational waves that we could see here on Earth.
20:07
All particles belong to two large groups: fermions and bosons.
16:11
Just how much stronger is this year’s solar activity going to get?
17:25
So you’ve decided to jump into a black hole...