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PBS Space Time
Is Interstellar Travel Impossible?
Season 8
Episode 19
Space is pretty deadly. But is it so deadly that we’re effectively imprisoned in our solar system forever? Many have said so, but a few have actually figured it out.
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9:48
Find out about the last time and the next time the Earth will be hit by a Gamma-ray Burst.
9:06
We were recently visited by a traveler from outside our solar system: 'Oumuamua.
11:19
Large-scale phenomena can give us incredible insights into the world of quantum mechanics.
6:00
Let’s take a moment to remember the selfless sacrifices made by some robotic explorers.
9:45
Let’s talk about the mysterious zero-point energy and what it really can and can’t do.
9:17
If quantum field theory is right about vacuum energy, our universe shouldn't exist.
11:02
Astronomers haven't been able to find up to half of the baryonic matter in the universe.
11:29
It turns out that "nothing" is one of the most interesting somethings in all of physics.
11:12
Recent findings suggest that the fundamental constants may not be as stable as we assumed.