PBS Space Time (2015)
Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth.
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Episodes
SpecialsSeason 1Season 2015Season 2016Season 2017Season 2018Season 2019Season 2020Season 2021Season 2022Season 2023Season 2024Season 2025Season 2026
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1. The Universe Itself Might Be Hiding the Gravity Particle From Us2026-01-13 · 20mTo progress to the next level in understanding reality, we need to combine quantum mechanics and Einstein’s general relativity. And to do that, most physicists believe we need a th
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2. This Particle Solved Everything. We Just Found Out It Isn't Real2026-01-22 · 20mThe universe thrums with quantum fields; and the particles of matter and force emerge as vibrational manifestations of the deep symmetries of these fields. The layers and reflectio
- 3 3. The Universe Tried to Hide the Gravity Particle. Physicists Found a Loophole.2026-02-05 · 19mPhysicists have long believed that detecting the particle of gravity—the graviton—was fundamentally impossible, with the universe itself seeming to block every direct attempt. This
- 4 4. The Universe Is Racing Apart. We May Finally Know Why.2026-02-19 · 21mWe've known that the universe is expanding since 1929, and that its expansion is accelerating since 1998. The culprit behind the acceleration is unknown, so we live with a stand-in
- 5 5. Most of Reality Is Invisible. We May Finally Be About to Reveal It.2026-03-05 · 20mSome people worried that the large hadron collider would smash particles together so hard it would make black holes that would swallow the earth, open wormholes to other dimensions
- 6 6. Something Disturbing Happens When You Solve Einstein's Equations This Way2026-04-02 · 16mKurt Gödel discovered a solution to General Relativity that allows time travel without any exotic physics, revealing that the theory doesn’t actually guarantee a consistent chain o
- 7 7. Earth’s Core Should Be Impossible. A New State of Matter Explains It.2026-04-16 · 18mIs Earth’s core a solid or a liquid? Yes. The mysteries of our own planet’s interior have, in many ways, been harder to crack than those of the rest of the cosmos. We can send prob
- 8 8. We Found Galaxies Too Old for the Universe2026-04-30 · 20mThe James Webb Space Telescope found galaxies that are too ancient-looking for our young universe. You may have heard that, but it keeps finding them, and our recent efforts to sol
- 9 9. We Thought Black Holes Ended in Singularities. They Might End In a Frozen Big Bang.2026-05-21 · 17mFor a while back there we might be able to avoid the black hole. They’d been lurking as shadows in our theories of gravity forever. Enough mass crammed into a small enough space wo
- 10 10. We’ve Been Searching for Aliens the Wrong Way. That’s All About To Change. . .2026-06-04 · 21mWe’ve been looking for messages from the stars ever since Frank Drake pointed the Green Bank radio telescope at Tau Ceti and Epsilon Eridany 65 years ago. He saw nothing that could
- 11 11. We Thought Black Holes Created Event Horizons. It Might Be the Opposite2026-06-18 · 20mDon’t panic, but it's possible that an event horizon is forming right behind you right now. Don’t bother looking—you won’t see it. You won’t know that it’s growing to envelop you u
- 12 12. The Quantum Experiment That Breaks Time2026-07-02 · 18mModern physics is weird. In quantum mechanics we have the Schrodinger’s cat thought experiment, a cat in a quantum superposition of being simultaneously alive and dead. And in rela
- 13 13. The Universe Has Been Expanding Since the Big Bang. Just Not How We Thought.2026-07-16 · 19mLast year, the Dark Energy Spectroscopic Instrument—DESI—made headlines around the world. Its enormous map of the Universe hinted that dark energy—the mysterious something causing
- 14 14. We Thought All Black Holes Came From Stars. We May Have Been Wrong.2026-08-04 · 19mLIGO may have detected a black hole that shouldn't exist, potentially revealing the first evidence of primordial black holes formed in the earliest moments after the Big Bang. But
- 15 15. There's Something Massive Hiding Behind the Galaxy's Strangest Star2026-08-13 · 17mFrom Dyson swarm to comet apocalypse—it's been 10 years since the discovery of Tabby’s star and we finally have a leading contender to explain the strangest known star in the galax
- 16 16. JWST May Have Discovered a New Cosmic Object: The Black Hole Star2026-08-27 · 15mGigantic black holes existed in a cosmic eyeblink after the Big Bang. That should be impossible. The James Webb Space Telescope has either made the problem much worse, or solved it
Cast
Matthew O’DowdSelf - HostImages
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