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PBS Space Time

The Strange Universe of Gravitational Lensing

Season 2 Episode 33

In the world of our mind’s eye, light travels in a straight line. In reality, spacetime is deflected and magnified through the lens of gravity. Find out how this works and what it allows us to learn about our universe in this episode of Space Time.

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Season
Black Hole Harmonics
13:11
We’ll explore the papers that claim to have detected black hole harmonics.
How Many Universes Are There?
14:03
The universe is big, but it’s peanuts compared to the eternally inflating multiverse
Is Pluto a Planet?
14:03
You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast.
Could We Terraform Mars?
15:33
Could we terraform Mars?
Is Earth's Magnetic Field Reversing?
12:46
Is Earth's Magnetic Field Reversing?
How To Become an Astrophysicist
12:45
Are you thinking about becoming (or ever just wondered how one becomes) an Astrophysicist?
What Happened Before the Big Bang?
10:23
We actually have a pretty good idea of what might have happened before the Big Bang.
What Caused the Big Bang?
13:12
What Caused the Big Bang?
Did Time Start at the Big Bang?
12:30
Did Time Start at the Big Bang?
The Quantum Internet
11:35
The Quantum Internet
Thorium and the Future of Nuclear Energy
16:05
Thorium and the Future of Nuclear Energy
How Black Holes Kill Galaxies
11:20
It turns out black holes may be responsible for ending star formation across the galaxy.
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