PBS Space Time (2015)

Episodes

1. 1 1. Are Dark Matter And Dark Energy The Same?2019-01-09 · 14mAstronomers are the worst at naming things. Dark energy AND dark matter? Who can remember which is which. But perhaps one astronomer has just fixed it, with a theory that says perh
2. 2 2. Our Antimatter, Mirrored, Time-Reversed Universe2019-01-16 · 19mThe foundations of quantum theory rests on its symmetries. For example, it should be impossible to distinguish our universe from one that is that is the perfect mirror opposite in
3. 3 3. The Crisis in Cosmology2019-01-24 · 19mThe search for a single number: the hubble constant, which is the rate of expansion of our universe, has consumed astronomers for generations. Finally, two powerful and independent
4. 4 4. Perpetual Motion From Negative Mass?2019-01-30 · 16mExotic matter – matter with negative mass - has long been the pipedream of science fiction writers, futurists, and certain rather. . . optimistic researchers. It’s the key to faste
5. 5 5. Sound Waves from the Beginning of Time2019-02-07 · 18mInvisible to the naked eye, our night sky is scattered with the 100s of billions of galaxies the fill the known universe. Like the stars, these galaxies form constellations – hidde
6. 6 6. Secrets of the Cosmic Microwave Background2019-02-20 · 18mHook up an old antenna to your TV and scan between channels. The static buzz you hear is mostly due to the ambient radio produced by our noisy pre-galactic civilization. But around
7. 7 7. The Impossibility of Perpetual Motion Machines2019-03-06 · 17mBad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the perpetual motion machine. No working perpetual motion machine
8. 8 8. Will You Travel to Space?2019-03-13 · 17mThe Future of Space Tourism with Richard Branson The private space-race has been on for a while now. The attention has been on Space-X and Blue Origin with their reusable rockets.
9. 9 9. Is Dark Energy Getting Stronger?2019-03-20 · 19mThe power of Dark Energy may be increasing as the universe ages. Subtle clues are emerging that the accepted model for the nature of dark energy and dark matter may not be all that
10. 10 10. Could the Universe End by Tearing Apart Every Atom?2019-03-28 · 16mOf all the unlikely ends of the universe, the Big Rip has to be the most spectacular. Galaxies ripped to shreds, dogs and cat first living together, then tragically separated by th
11. 11 11. The Edge of an Infinite Universe2019-04-03 · 19mHave you ever asked “what is beyond the edge of the universe?” And have you ever been told that an infinite universe that has no edge? You were told wrong. In a sense. We can defin
12. 12 12. The Holographic Universe Explained2019-04-10 · 19mWe live in a universe with 3 dimensions of space and one of time. Up, down, left, right, forward, back, past, future. 3+1 dimensions. Or so our primitive Pleistocene-evolved brains
13. 13 13. No Dark Matter = Proof of Dark Matter?2019-04-24 · 15mWe’ve been failing to detect dark matter for decades. Finally, the latest failure to detect dark matter may have actually proved its existence. One of these is true: either most of
14. 14 14. The Real Science of the EHT Black Hole2019-05-01 · 13mHow do you take a picture of a black hole and what can we learn from it? Our first ever actual bona fide photo of a black hole, made by the Event Horizon Telescope and revealed to
15. 15 15. Why Quantum Computing Requires Quantum Cryptography2019-05-09 · 18mQuantum computing is cool, but you know what would be extra awesome - a quantum internet. In fact if we want the first we’ll need the latter. And the first step to the quantum inte
16. 16 16. The Cosmic Dark Ages2019-05-16 · 16mWe live in the stelliferous era. Somewhere between 10 and 1000 billion trillion stars fill the observable universe with light. But there was a time before the first star ignited. A
17. 17 17. The Alchemy of Neutron Star Collisions2019-06-06 · 16mCarl Sagan’s famous words: “We are star stuff” refers to a mind-blowing idea – that most atomic nuclei in our bodies were created in the nuclear furnace and the explosive deaths of
18. 18 18. How Black Holes Kill Galaxies2019-06-17 · 15mBlack holes are really only dangerous if you get too close. Ha, who am I kidding. It turns out they may be responsible for ending star formation across the entire universe.
19. 19 19. The Quasar from The Beginning of Time - STELLAR2019-06-20 · 9mRecently, the oldest quasar ever seen was discovered by the Gemini North telescope in Hawaii, the Magellan Telescopes at Las Campanas Observatory in Chile, as well as the Large Bin
20. 20 20. Thorium and the Future of Nuclear Energy2019-07-01 · 19mEnergy too cheap to meter - that was the promise of nuclear power in the 1950s, at least according to Lewis Strauss chairman of the Atomic Energy Commission. That promise has not c
21. 21 21. The Quantum Internet2019-07-15 · 16mWhen we finally have a quantum internet you’ll be able to simultaneously like and dislike this video. But we don’t. So I hope you like it. The world is widely regarded as being wel
22. 22 22. Did Time Start at the Big Bang?2019-07-18 · 14m
23. 23 23. Deciphering The Vast Scale of the Universe - STELLAR2019-07-25 · 11mOne of the fundamental questions humanity has always asked is how big is our Universe? For much of human history, people believed that Planet Earth was the very center of the entir
24. 24 24. What Caused the Big Bang?2019-08-06 · 14mEvery astronomy textbook tells us that soon after the Big Bang, there was a period of exponentially accelerating expansion called cosmic inflation. In a tiny fraction of a second,
25. 25 25. Exploring Arecibo in VR 1802019-08-12 · 6mHow can you build a telescope that can see the entire night sky without moving its dish? Well in this special episode of Space Time we took a tour of the Arecibo Observatory with a
26. 26 26. What Happened Before the Big Bang?2019-08-19 · 14mWe actually have a pretty good idea of what might have happened before the Big Bang. That is, as long as we define the Big Bang as the extremely hot, dense, rapidly expanding unive
27. 27 27. How To Become an Astrophysicist + Challenge Question!2019-08-26 · 13mDo you want to major in Astrophysics? Are you thinking about becoming (or ever just wondered how one becomes) an Astrophysicists? Do you want to know Matt O’Dowd’s origin story? Th
28. 28 28. Is Earth's Magnetic Field Reversing?2019-09-03 · 15mEarth’s magnetic field protects us from deadly space radiation. What if it were drastically weakened, as a precursor to flipping upside down? I mean, it has before … many, many tim
29. 29 29. Could We Terraform Mars?2019-09-16 · 20mHumanity’s future is glorious. As we master space travel, we’ll hop from one lifeless world to the next. Life will blossom in our path and the galaxy with shimmer with beautiful Ea
30. 30 30. Is Pluto a Planet?2019-09-23 · 19mYou know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. The surprisingly vicious debate over the planetary status of Pluto has given us a fascinati
31. 31 31. How Many Universes Are There?2019-09-30 · 19mThe universe is big, but it’s peanuts compared to the eternally inflating multiverse. But just how many universes are there? What are they like? And most importantly, what can they
32. 32 32. Black Hole Harmonics2019-10-07 · 15mBlack holes are crazy enough on their own – but crash two together and you end up with a roiling blob of inescapable space that vibrates like a beaten drum. And the rich harmonics
33. 33 33. Loop Quantum Gravity Explained2019-10-15 · 18mIt’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it really defeat string theory in our quest for a Theory of Everything?
34. 34 34. Is Time Travel Impossible?2019-10-21 · 14mTime travel stories are cool because both the past and future are somehow more interesting that the present and because everyone wants a redo. But so far it appears we’re doomed to
35. 35 35. Why We Might Be Alone in the Universe2019-11-04 · 16mWhy does it appear, that humanity is the lone intelligence in the universe? The answer might be that planet Earth is more unique than we've previously assumed. The rare earth hypot
36. 36 36. Does Life Need a Multiverse to Exist?2019-11-11 · 18mLife exists in our universe. There we go - one hopefully uncontroversial statement. Therefore our universe is capable of producing and supporting life. How am I going? Two for two?
37. 37 37. Can You Observe a Typical Universe?2019-11-18 · 19mThe moment you started observing reality, you hopelessly polluted any conclusions you might make about it. The anthropic principle guarantees that you are NOT seeing the universe i
38. 38 38. Is The Universe Finite?2019-12-02 · 17mThe universe is big, really, really big. Although according to a new paper, it may literally be infinitely smaller than we previously thought.
39. 39 39. The Doomsday Argument2019-12-09 · 18mSince the dawn of humanity around 100 billion people have lived. How many will live in the future of our species? We might hope for a trillion times that if we colonize the galaxy.
40. 40 40. Do Black Holes Create New Universes?2019-12-17 · 19mWhat if every single black hole that formed in our universe sparked the big bang of a new universe? Cosmological natural selection proposes exactly this - but even better, it claim