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
- 1 1. What Happens During a Quantum Jump?2021-01-12 · 13mSince the very beginning of quantum mechanics, a debate has raged about how to interpret its bizarre predictions. And at the heart and origin of that debate is the quantum jump or
- 2 2. Can We Break the Universe?2021-01-19 · 17mToday we’re going to delve into a couple of the most famous paradoxes of special relativity: the Twin Paradox, The Ladder Paradox (aka the Barn-Pole Paradox), and a paradox suggest
- 3 3. Is Dark Matter Made of Particles?2021-01-26 · 17mDark Matter Particles: Gateway to The Dark Universe
- 4 4. How Does Gravity Warp the Flow of Time?2021-02-10 · 13mThere’s a deep connection between gravity and time - gravitational fields seem to slow the pace of time in what we call gravitational time dilation. And today we’ll explore the ori
- 5 5. Gravitational Wave Background Discovered?2021-02-17 · 19mIt was pretty impressive when LIGO detected gravitational waves from colliding black holes. Well we’ve just taken that to the next level with a galaxy-spanning gravitational wave d
- 6 6. Does Time Cause Gravity?2021-02-24 · 12mWe know that gravity must cause clocks to run slow on the basis of logical consistency. And we know that gravity DOES cause clocks to run slow based on many brilliant experiments.
- 7 7. How Does Gravity Affect Light?2021-03-09 · 14mWe know that gravity exerts its pull on light, and we have an explanation for why. Actually, we have multiple explanations that all predict the same thing. And at first glance, th
- 8 8. The NEW Crisis in Cosmology2021-03-16 · 19mI have good news and bad news. Bad news first: two years ago we reported on the Crisis in Cosmology. Since then, it’s only gotten worse. And actually, the good news is also that th
- 9 9. Zeno's Paradox & The Quantum Zeno Effect2021-03-23 · 18m“A moving arrow is at rest.” This is obviously a nonsensical contradiction. But Zeno, a Greek philosopher famous for his metaphysical trolling, devised a paradox whose conclusion i
- 10 10. Why the Muon g-2 Results Are So Exciting!2021-04-07 · 13mWhen a theory makes a prediction that disagrees with an experimental test, sometimes it means we should throw the theory away. But what if that theory has otherwise produced the mo
- 11 11. What If Dark Matter Is Just Black Holes?2021-04-13 · 13mIt may be that for every star in the universe there are billions of microscopic black holes streaming through the solar system, the planet, even our bodies every second. Sounds hor
- 12 12. The NEW Warp Drive Possibilities2021-04-21 · 19mThat Einstein guy was a real bummer for our hopes of a star-hopping, science-fiction-y future. His whole “nothing travels faster than light” rule seems to ensure that exploration o
- 13 13. How To Know If It's Aliens2021-05-11 · 20mThere’s one rule on Space Time: It’s never Aliens. But every rule has an exception and this rule is no exception because: It’s never aliens, until it is. So is it aliens yet? And o
- 14 14. Breaking The Heisenberg Uncertainty Principle2021-05-19 · 12mQuantum mechanics forbids us from measuring the universe beyond a certain level of precision. But that doesn’t stop us from trying. And in some cases succeeding, by squeezing the H
- 15 15. What If (Tiny) Black Holes Are Everywhere?2021-05-25 · 17mIt’s fair to say that black holes may be the scariest objects in the universe. Happily for us, the nearest is probably many light-years away. Unless of course, Planck relics are a
- 16 16. Are We Running Out of Space Above Earth?2021-06-09 · 17mWhile recent news about the Chinese Long March 5 Rocket made a lot of people very nervous because a 22-ton rocket was going to fall out of the sky, this sort of thing happens all t
- 17 17. Can Space Be Infinitely Divided?2021-06-16 · 13mHow many times can I half the distance between my hands? Assume perfect coordination and the ability to localize my palms to the quantum level. 15 halvings gets them to within a ce
- 18 18. How Quantum Entanglement Creates Entropy2021-06-23 · 20mEntropy is surely one of the most perplexing concepts in physics. It’s variously described as a measure of a system’s disorder - or as the amount of useful work that you can get fr
- 19 19. Electrons DO NOT Spin2021-07-07 · 19mQuantum mechanics has a lot of weird stuff - but there’s thing that everyone agrees that no one understands. I’m talking about quantum spin. Let’s find out how chasing this elusive
- 20 20. Where Are The Worlds In Many Worlds?2021-07-13 · 14mMany Worlds interpretation of quantum mechanics proposes that every time a quantum event gets decided, the universe splits so that every possible outcome really does occur. But whe
- 21 21. How Magnetism Shapes The Universe2021-07-21 · 20mHow far can you follow a compass needle? As far as the north magnetic pole where the needle starts spinning wildly? Compass needles align with magnetic field lines; and on the prec
- 22 22. How An Extreme New Star Could Change All Cosmology2021-08-03 · 19mA new white dwarf has been discovered (poetically named: ZTF J1901+1458) that’s doing some stuff that no white dwarf should ever be able to do. In fact, it has multiple properties
- 23 23. How to Communicate Across the Quantum Multiverse2021-08-10 · 20mIn the Many Worlds interpretation of quantum mechanics, the universal wavefunction is the reality, encompassing all possible histories and futures and all exist. But we are only se
- 24 24. How Vacuum Decay Would Destroy The Universe2021-08-18 · 14mThe universe is going to end. But of all the possible ends of the universe vacuum decay would have to be the most thorough - because it could totally rewrite the laws of physics. T
- 25 25. First Detection of Light from Behind a Black Hole2021-09-07 · 18mHow do you see the unseeable - how do you explore the inescapable? Our cleverest astronomers have figured out ways to catch light that skims the very edge of black holes. Let’s fin
- 26 26. Neutron Stars: The Most Extreme Objects in the Universe2021-09-15 · 15mWe’ve traveled to lots of weird places on this show - from the interiors of black holes to the time before the big bang. But today I want to take you on a journey to what has got t
- 27 27. How Electron Spin Makes Matter Possible2021-09-21 · 20mToday I’m going to explain why you’re not falling through your chair right now using one simple fact, and one object. The fact is that all electrons are the same as each other, and
- 28 28. Why Magnetic Monopoles SHOULD Exist2021-10-05 · 19mWhat happens if you cut a bar magnetic in half? We get two magnets, each with their own North and South poles. But what happens if you keep on cutting, into fourths and eighths and
- 29 29. New Results in Quantum Tunneling vs. The Speed of Light2021-10-13 · 18mParadoxically, the most promising prospects for moving matter around faster than light may be to put a metaphorical brick wall in its way. New efforts in quantum tunneling - both t
- 30 30. Will Constructor Theory REWRITE Physics?2021-10-20 · 17mThe people behind the greatest leaps in physics - Einstein, Newton, Heisenberg, all had the uncanny ability to see the fundamentals - see the deepest, underlying facts about the wo
- 31 31. Is ACTION The Most Fundamental Property in Physics?2021-11-02 · 20mIt’s about time we discussed an obscure concept in physics that may be more fundamental than energy and entropy and perhaps time itself. That’s right - the time has come for Action
- 32 32. What If Our Understanding of Gravity Is Wrong?2021-11-10 · 19mWhat if there is no such thing as dark matter? What if our understanding of gravity is just wrong? New work is taking another shot at that Einstein guy. Let’s see if we’ve finally
- 33 33. Are Black Holes Actually Fuzzballs?2021-11-17 · 17mBlack holes are a paradox. They are paradoxical because they simultaneously must exist but can’t, and so they break physics as we know it. Many physicists will tell you that the be
- 34 34. What Happens If A Black Hole Hits Earth?2021-12-20 · 21mThe possibility that a black hole could actually impact Earth may seem straight out of science fiction, but the reality is that microscopic primordial black holes could actually hi
- 35 35. How to Find ALIEN Dyson Spheres2021-12-29 · 15mOn our search for alien lifeforms we scan for primitive biosignatures, and wait and hope for their errant signals to happen by the Earth. But that may not be the best way. Any ener
Cast
Matthew O’DowdSelf - HostImages
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