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PBS Space Time

New Evidence: Earth Had Rings (and Might Regain Them)

Season 11 Episode 1 | 16m 30s

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.

Aired: 04/02/25
Extras
Watch • 18:19
PBS Space Time
The Crisis In Physics: Are We Missing 17 Layers of Reality?
What if, just before we reach the bottom, we find out that reductionism fails?
Episode: S11 E6 | 18:19
Watch • 19:03
PBS Space Time
Is Our Model of Dark Energy Wrong? | New 4.2σ Results
The biggest news in cosmology in recent years is that dark energy may be fading away.
Episode: S11 E5 | 19:03
Watch • 18:50
PBS Space Time
Is There A Simple Solution To The Fermi Paradox?
Does this also explain why there are no aliens?
Episode: S11 E4 | 18:50
Watch • 16:58
PBS Space Time
Quantum Energy Teleportation is Real!
Quantum energy teleportation may be as close as we get to transporter beams. But how close is that?
Episode: S11 E3 | 16:58
Watch • 14:50
PBS Space Time
Why Didn’t Antimatter Destroy The Universe?
Why is there any matter in the universe? A new antimatter breakthrough at LHC holds clues.
Episode: S11 E2 | 14:50
Watch • 17:23
PBS Space Time
How Astrophysics Can Literally Save the World
How is it possible to tell if a space rock will one day collide with the Earth?
Episode: S10 E37 | 17:23
Watch • 15:58
PBS Space Time
Your DNA's Codes Are (Probably) From Outer Space
Did you know that many of us have up to 4% neanderthal DNA?
Episode: S10 E36 | 15:58
Watch • 16:35
PBS Space Time
Will The Big Bang Happen Again (and Again)?
What if the Big Bang was just an endless cycle?
Episode: S10 E35 | 16:35
Watch • 19:39
PBS Space Time
The Final Barrier to (Nearly) Infinite Energy
Why are billions suddenly being pumped into fusion startups?
Episode: S10 E34 | 19:39
Watch • 16:36
PBS Space Time
The Crisis in Physics: Why the Higgs Boson Should Not Exist!
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.
Episode: S10 E33 | 16:36
Latest Episodes
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  • All
  • PBS Space Time Season 11
  • PBS Space Time Season 10
  • PBS Space Time Season 9
  • PBS Space Time Season 8
  • PBS Space Time Season 7
  • PBS Space Time Season 6
  • PBS Space Time Season 5
  • PBS Space Time Season 4
  • PBS Space Time Season 3
  • PBS Space Time Season 2
  • PBS Space Time Season 1
Watch • 18:19
PBS Space Time
The Crisis In Physics: Are We Missing 17 Layers of Reality?
What if, just before we reach the bottom, we find out that reductionism fails?
Episode: S11 E6 | 18:19
Watch • 19:03
PBS Space Time
Is Our Model of Dark Energy Wrong? | New 4.2σ Results
The biggest news in cosmology in recent years is that dark energy may be fading away.
Episode: S11 E5 | 19:03
Watch • 18:50
PBS Space Time
Is There A Simple Solution To The Fermi Paradox?
Does this also explain why there are no aliens?
Episode: S11 E4 | 18:50
Watch • 16:58
PBS Space Time
Quantum Energy Teleportation is Real!
Quantum energy teleportation may be as close as we get to transporter beams. But how close is that?
Episode: S11 E3 | 16:58
Watch • 14:50
PBS Space Time
Why Didn’t Antimatter Destroy The Universe?
Why is there any matter in the universe? A new antimatter breakthrough at LHC holds clues.
Episode: S11 E2 | 14:50
Watch • 17:23
PBS Space Time
How Astrophysics Can Literally Save the World
How is it possible to tell if a space rock will one day collide with the Earth?
Episode: S10 E37 | 17:23
Watch • 15:58
PBS Space Time
Your DNA's Codes Are (Probably) From Outer Space
Did you know that many of us have up to 4% neanderthal DNA?
Episode: S10 E36 | 15:58
Watch • 16:35
PBS Space Time
Will The Big Bang Happen Again (and Again)?
What if the Big Bang was just an endless cycle?
Episode: S10 E35 | 16:35
Watch • 19:39
PBS Space Time
The Final Barrier to (Nearly) Infinite Energy
Why are billions suddenly being pumped into fusion startups?
Episode: S10 E34 | 19:39
Watch • 16:36
PBS Space Time
The Crisis in Physics: Why the Higgs Boson Should Not Exist!
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.
Episode: S10 E33 | 16:36