Back to Show
Watch Preview
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.
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.

18:19
What if, just before we reach the bottom, we find out that reductionism fails?

19:03
The biggest news in cosmology in recent years is that dark energy may be fading away.

18:50
Does this also explain why there are no aliens?

16:58
Quantum energy teleportation may be as close as we get to transporter beams. But how close is that?

14:50
Why is there any matter in the universe? A new antimatter breakthrough at LHC holds clues.

16:30
There’s an extremely good chance that Earth once did have a ring system.

17:23
How is it possible to tell if a space rock will one day collide with the Earth?

15:58
Did you know that many of us have up to 4% neanderthal DNA?

16:35
What if the Big Bang was just an endless cycle?

19:39
Why are billions suddenly being pumped into fusion startups?

16:36
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.

14:30
Maybe dark energy doesn't exist?