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. How Many Black Holes Are In The Solar System?2025-01-16 · 21mDark matter has eluded us for many decades. Even our most advanced particle colliders and sophisticated underground detectors have come up short. But it may be that we can finally
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2. Does Timescapes DISPROVE Dark Energy?2025-01-23 · 16mThe universe is expanding and that expansion is accelerating under the power of dark energy and eventually all matter and energy will be dispersed over such unthinkable distances t
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3. The Crisis in Physics: Why the Higgs Boson Should NOT Exist!2025-01-30 · 19mAccording to quantum physics, the universe should have collapsed on itself in the instant after the Big Bang due to all particles being 100 million billion times heavier. Recent ob
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4. The Final Barrier to (Nearly) Infinite Energy2025-02-13 · 22mThey say fusion is 50 years away, no matter when you ask. Then why are billions suddenly being pumped into fusion startups? Yes to train LLMs, but there's a reason the technobrats
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5. Will The Big Bang Happen AGAIN (and Again)?2025-02-20 · 18mHow did the universe begin? How can something come from nothing? One way to “solve” this most difficult of philosophical conundrums is to avoid it altogether. Maybe the universe di
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6. Your DNA Is (Almost Certainly) From Outer Space2025-03-06 · 18mDid you know that many of us have up to 4% neanderthal DNA? And that 100% of your DNA may come from outer space? No joke. The biochemistry that defined the coding system of your DN
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7. How Astrophysics Can (LITERALLY) Save the World2025-03-13 · 20mGiant space rocks are definitely going to hit the Earth again. We actually do know how to deflect them, but only if we find them and correctly assess their risk. But the solar syst
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8. NEW EVIDENCE: Earth Had Rings (and Might Regain Them)2025-04-03 · 19mPlanet Earth is the jewel of the solar system—the shimmery blue oceans, the verdant green forests, the wispy whimsical cloud formations. Saturn is the only competitor for most gorg
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9. Why Didn’t Antimatter Destroy The Universe? | LHC Breakthrough2025-04-17 · 18mAt one-one-thousandth of a second after the Big Bang, the great annihilation event should have wiped out all matter, leaving a universe of only radiation. Why still don't know why
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10. Quantum Energy Teleportation is REAL!2025-05-01 · 20mThe vacuum of space is a chaotic sea of quantum fluctuations. Some have said that this vacuum energy can be harvested to build our future starship engines, or manipulated to build
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11. Is There A Simple Solution To The Fermi Paradox?2025-05-15 · 21mAround 2 billion years ago, life had plateaued in complexity, ruined the atmosphere, and was on the verge of self-annihilation. But then something strange and potentially extremely
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12. Is Our Model of Dark Energy WRONG? | New 4.2σ Results2025-05-29 · 22mThe biggest news in cosmology in recent years is that the mysterious universe-accelerating entity we call dark energy may be fading away. The evidence for this is now strong enough
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13. The Crisis In Physics: Are We Missing 17 Layers of Reality?2025-06-12 · 21mBig things are made of smaller things, and those smaller things are made of smaller things still. That’s reductionism in a nutshell, and digging our way to the smallest layer has b
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14. Are The Fundamental Constants Finely Tuned? | The Naturalness Problem2025-06-26 · 20mDid God have any choice in creating the world? So asked Albert Einstein. He was being poetic. What he really meant, was whether the universe could have been any other way. Could it
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15. How Did SPACE Shape Your DNA?2025-07-17 · 20mThe molecular basis of all life is mysteriously asymmetric, only using molecules on one side of what should be the equivalent mirrored pairs. The universe has a similar mirror asym
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16. Why The Multiverse Could Be Real2025-07-31 · 20mThe multiverse pops out of quite a few theories in physics, and has been proposed as a solution to certain vexing problems. But it’s also been argued that the very idea of a multiv
- 17 17. Is There Evidence For a Vast Multiverse?2025-08-14 · 19mIn 1987, Steven Weinberg wrote a cute little paper entitled “Anthropic Bound on the Cosmological Constant”. I say cute little paper because it feels minor in comparison to, say, el
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18. The Most Important Satellite You’ve (Probably) Never Heard Of2025-09-04 · 15mOne of the most important reasons we go to space is to know our own planet better. Today I'm going to tell you about an orbiting facility that literally watches Earth's biosphere b
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19. At What Point Does Spacetime Become Quantum?2025-09-18 · 21mTo observe the quantum nature of gravity and of spacetime itself, we need a particle collider the size of the solar system. Or we could just physics smarter and build one on a lab
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20. Why Life on Mars Will DOOM Humanity2025-10-02 · 21mRecent findings have brought us closer than we’ve ever been to confirming life beyond the Earth. As we wait for confirmation or otherwise, let’s think about what this will tell us
- 21 21. We Were WRONG About the Quantum Eraser!2025-10-16 · 25mDoes quantum mechanics allow the future to retroactively influence the past, as in the infamous delayed choice quantum eraser experiment? How about we get an actual quantum physici
- 22 22. Why Antimatter Engines Could Launch In Your Lifetime2025-10-30 · 22mAntimatter drives sound like science fiction, but they may not be as far as you think. There’s a version that could, just maybe, launch within your lifetime.
- 23 23. The Gravity Particle Should Exist. So Where Is It?2025-11-13 · 23mPhysics is this close to understanding the entire universe. And what lives in this gap? Many physicists think it’s the elusive graviton—the quantum particle of gravity—whose discov
- 24 24. The Biggest Planet Discovery in History Is About to Begin! (Next Year)2025-11-25 · 23mThere are lots of reasons to search for planets around other stars—exoplanets. A big one is to find other places in the universe that might harbor life. We only know of one such pl
- 25 25. Heisenberg Made a Discovery in 1925. We Still Can't Explain It2025-12-11 · 27m2025 is … was the international year of quantum science and technology. Yes because quantum tech is increasingly important, but especially because quantum mechanics was invented 10
Cast
Matthew O’DowdSelf - HostImages
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