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PBS Space Time
Space Does Not Expand Everywhere
Season 8
Episode 14
Space is big, and it’s getting bigger. But where does all that new space actually come from? And is it popping into existence all around you right now? Is that why the remote control is always further away than I thought?
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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.
16:19
Today we are jumping into a black hole. Again.
15:36
The Moon: humanity’s first destination beyond our atmosphere.
15:07
So how did humans figure out the solar system? Eclipses!
15:02
Is gravity just an emergent effect of entropy?
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?
15:13
So what exactly is an EMP, and how dangerous are they?
14:44
The terrible singularity at the heart of the black hole may be no more.