Search PBS Space Time


2022-11-23: How To See Black Holes By Catching Neutrinos

  • 00:39: And then there’s neutrino astronomy.
  • 01:16: ... of matter rather than force-carrying bosons like the photons of regular astronomy, and neutrino's fermion type is lepton, so they're cousins of the ...
  • 02:18: ... you can see how doing neutrino astronomy might be challenging, given that each neutrino has a minuscule ...
  • 12:30: The future of neutrino astronomy is bright, and it’s hard to even guess what we’ll learn as we slowly build our neutrino map of space time.

2021-12-29: How to Find ALIEN Dyson Spheres

  • 08:12: In astronomy, color refers to the ratio of brightnesses at two different wavelengths.

2021-11-10: What If Our Understanding of Gravity Is Wrong?

  • 14:31: For instance, CuriosityStream has Black Holes: Messages from The Edge of Space, which examines not only black holes, but neutrino astronomy.

2020-12-22: Navigating with Quantum Entanglement

  • 13:37: ... typical astronomy style, the classifications are entirely based on the observational ...

2020-09-01: How Do We Know What Stars Are Made Of?

  • 00:28: ... first thing you learn in astronomy is that the sun and the other stars are giant balls of fiery hydrogen ...
  • 01:24: She not only revolutionized our understanding of the stars, but she helped blaze a trail in astronomy and physics for the women who would come after.
  • 02:24: ... Jump Cannon and Henrietta Swan Leavitt - two of the greats of stellar astronomy - had come through Radcliffe College - the women’s college adjoining the ...

2020-07-28: What is a Theory of Everything: Livestream

  • 00:00: ... is going to show up but i really think that multi-messenger astronomy so this is you know looking for uh you know looking for like cosmic ...

2020-07-20: The Boundary Between Black Holes & Neutron Stars

  • 01:53: We’ve done gravitational wave astronomy before, but this event is so mysterious we had to cover it.

2020-04-07: How We Know The Earth Is Ancient

  • 00:00: ... astronomy we talk about billions of years like it’s no big deal. But how can we be ...

2020-03-03: Does Quantum Immortality Save Schrödinger's Cat?

  • 11:30: Caitlin Saks and Arlo Pérez take you through the biology, the geology, and the astronomy being done at the South Pole.

2020-01-13: How To Capture Black Holes

  • 11:32: ... like I said: gravitational wave astronomy will reveal many cosmic mysteries and strange phenomena. Now we have the ...

2019-12-02: Is The Universe Finite?

  • 01:02: ... on Space Time Journal Club we’ll delve into the Nature Astronomy paper that just reported this: Planck evidence for a closed Universe and ...

2019-11-18: Can You Observe a Typical Universe?

  • 00:45: ... our astronomy improved, we realized that our sun is a typical example out of 100s of ...

2019-10-07: Black Hole Harmonics

  • 07:35: In astronomy, the analysis of the different frequencies of light is called spectroscopy.
  • 12:49: Gravitational wave astronomy is now really a thing.

2019-09-30: How Many Universes Are There?

  • 15:06: And a number of you found the International Astronomy Union's new defition of planet - the one that excluded Pluto - not very scientific at all.

2019-09-23: Is Pluto a Planet?

  • 06:30: New astronomy textbooks included distant Pluto and generations of students memorized 9 rather than 8 planets.
  • 08:42: ... 2006, the International Astronomical Union, the governing body of all astronomy names, designations, and definitions, met to finally define what it ...

2019-09-16: Could We Terraform Mars?

  • 04:23: ... a nice Nature Astronomy article last year, planetary scientists Bruce Jakosky and Christopher ...

2019-08-06: What Caused the Big Bang?

  • 00:00: Every astronomy textbook tells us that soon after the Big Bang there was this period of exponentially accelerating expansion called Cosmic Inflation.

2019-07-25: Deciphering The Vast Scale of the Universe

  • 02:31: And distance is one of the hardest things to measure in astronomy.

2019-06-17: How Black Holes Kill Galaxies

  • 05:24: ... in Astronomy, a dead galaxy refers to its current star formation activity in ...

2019-05-16: The Cosmic Dark Ages

  • 00:24: ... astronomy we study things that are very far away. It’s a powerful challenge ...

2019-03-20: Is Dark Energy Getting Stronger?

  • 00:45: ... looking at a new paper in Nature Astronomy, “Cosmological constraints from the Hubble diagram of quasars at high ...

2018-11-21: 'Oumuamua Is Not Aliens

  • 12:53: But I do know that Oumuamua is one of the most fascinating discoveries in astronomy in recent times.
  • 13:09: Are you interested in learning more about astronomy?
  • 13:37: Whether you want to learn about astronomy, quantum physics, or even artificial neural networks, you can learn more at

2018-10-03: How to Detect Extra Dimensions

  • 00:18: ... may have mentioned once or twice that the new era of gravitational wave astronomy is going to open new windows to the universe and unlock many ...

2018-08-23: How Will the Universe End?

  • 17:35: It's also where I'm a professor of physics and arithmancy-- sorry, astronomy.

2018-05-09: How Gaia Changed Astronomy Forever

  • 00:07: April 25th of 2018 marks the beginning of just such a leap for much of astronomy.

2018-04-25: Black Hole Swarms

  • 07:48: Besides being very cool and kind of freaky, this result is especially important for the new field of gravitational wave astronomy.

2018-04-18: Using Stars to See Gravitational Waves

  • 00:23: [MUSIC PLAYING] We are at the cusp of a golden age of gravitational wave astronomy.
  • 08:19: Gravitational wave astronomy is currently in a gold rush.

2018-02-14: What is Energy?

  • 11:53: The Great Courses Plus is actually a great resource for solidifying your physics and astronomy education.

2018-01-24: The End of the Habitable Zone

  • 10:09: To really gain intuition about our often very unintuitive universe, you need to start solving problems in physics, math, and astronomy.
  • 10:22: They've built problem based courses a huge range of subjects, including a lot of math but also physics, astronomy, and computer science.

2018-01-10: What Do Stars Sound Like?

  • 09:32: To really gain intuition about our often very unintuitive universe, you need to start solving problems in physics, math, and astronomy.
  • 09:46: They built problem-based courses on a huge range of subjects, including a lot of math, but also physics, astronomy, and computer science.

2017-11-29: Citizen Science + Zero-Point Challenge Answer

  • 00:24: In the past, astronomy was often performed by nobility and extremely enthusiastic amateurs.
  • 01:05: ... of the most important amateur astronomy work is in spotting changes in the night sky, spotting things like ...

2017-10-04: When Quasars Collide STJC

  • 01:12: ... this paper was just published in "Nature Astronomy" by Preeti Kharb and Dharam Vir Lal from India's National Center for ...

2017-09-20: The Future of Space Telescopes

  • 07:56: One of the most powerful uses of the aragoscope is in x-ray astronomy.

2017-05-10: The Great American Eclipse

  • 08:44: I saw my first solar eclipse on Flinders Island off the south coast of Australia when I was a kid, and it really enhanced my love of astronomy.

2017-04-19: The Oh My God Particle

  • 09:07: ... we figure out the origins of these particles, cosmic ray astronomy is becoming an increasingly powerful tool for investigating our amazing ...
  • 09:53: It delves into some of the biggest mysteries and challenges facing astronomy and space exploration.

2017-03-01: The Treasures of Trappist-1

  • 10:33: However, Galileo did make massive improvements in the design and effectively invented the use of telescopes for astronomy.

2017-02-15: Telescopes of Tomorrow

  • 09:29: Webb, GMT, and LSST will change the way we do astronomy.
  • 10:19: Alex Filippenko's course, "Understanding the Universe," is a pretty incredible survey of pretty much the entire field of astronomy.
  • 10:27: It includes a great lecture on telescopes, taking you from their most basic workings to the big bad machines we use in modern astronomy.

2017-02-02: The Geometry of Causality

  • 15:30: And to all my students in Astronomy 101 this semester, no, we're not learning about the star signs.

2016-07-20: The Future of Gravitational Waves

  • 00:54: This incredibly important observation was hailed at the time as representing the dawn of gravitational wave astronomy.

2016-06-15: The Strange Universe of Gravitational Lensing

  • 05:51: Distances are one of the hardest things to measure in astronomy but are essential for cosmology.

2016-04-27: What Does Dark Energy Really Do?

  • 02:53: ... to measure redshift, distance is one of the hardest things to get in astronomy, especially for things so far away that the universe will have expanded ...

2016-02-11: LIGO's First Detection of Gravitational Waves!

  • 07:03: This is a really, really big deal, and it marks the beginning of the era of gravitational wave astronomy.

2015-11-18: 5 Ways to Stop a Killer Asteroid

  • 08:25: Study hard and do some mad astronomy or rocket science.

2015-06-17: How to Signal Aliens

  • 03:45: Now, if Kerbals are doing astronomy-- and that's our target audience-- they're probably also looking for planets.
  • 05:12: ... cheap, ongoing signal that aliens could notice just by doing exoplanets astronomy, even if they aren't looking for other ...
44 result(s) shown.