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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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11:10
Learn about the standard model of particle physics, the most accurate physical theory yet.
10:36
One paper reports on a new particle outside the standard model: the sterile neutrino.
10:38
Forget oil. There’s another natural resource that’s never been touched, Asteroids.
11:37
Nothing can escape from below the event horizon- not matter, light, or even information.
11:03
Nothing can escape from below the event horizon- not matter, light, or even information.
10:06
Is the entire history of the universe perfectly knowable? Or has information been lost?
9:38
Flawed conservation laws are consequences of a much deeper principle: Noether’s theorem.
8:47
New Gaia mission data has dramatically changed how we understand our own galaxy.
8:33
We can now see that the Milky Way is swarming with tens of thousands of black holes.
8:36
We’re going to need a gravitational wave observatory - in fact, we've already built one.