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PBS Space Time
New Evidence: Earth Had Rings (and Might Regain Them)
Season 11
Episode 1
There’s an extremely good chance that Earth once did have a ring system. At least, that’s the proposal by a recent study that has evidence that a mysterious burst in meteor activity nearly half a billion years ago was actually caused by that ancient ring system collapsing onto the Earth. And, you know, if we had a ring once maybe we can have one again.
11:41
Constructor Theory is the ability to see the deepest underlying facts about the world.
13:00
New efforts in quantum tunneling show that superluminal motion may be possible.
14:15
The idea of magnetic monopoles remains one of physics’ most tantalizing maybes.
15:10
The fact is that all electrons are the same as each other and the object is what changes.
14:14
We take a journey to the center of a neutron star, a place where matter exists in states.
12:21
Our cleverest astronomers have figured out ways to catch light that skims black holes.
13:01
Of all the possible ends of the universe, vacuum decay would be the most thorough.
13:43
It may very well be possible to communicate between worlds.
14:30
A newly discovered white dwarf may change our understanding of all cosmology.
13:26
We explore the range and distance magnetism can take us.
12:50
Where are the worlds of all the times the universe has split?
14:05
Although elusive, the quantum spin has led to some of the deepest insights we now know.