Adam Riess recounts the moments of his Nobel prize-winning discovery that our universe is expanding at an accelerating rate, powered by a mysterious energy source called dark energy. For ask-us-anything segments and other exclusives...

We answer your questions. To listen to our backlog of ask-us-anything episodes for free, head to our Patreon, or join for $3/month to submit your questions: https://www.patreon.com/whythisuniverse

To listen to our backlog of past ask-us-anything episodes for free, head to our Patreon, or join for $3/month to ask us questions: https://www.patreon.com/whythisuniverse

Learn what exciting cosmology results and potential discoveries await us in 2025!For exclusive ask-us-anything episodes, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverse. Our merch is available here: https://www.shalmawe...

A discovery last year reveals our galaxy in a whole new light - except it's not light, it's neutrinos! Learn what this discovery can teach us about the Milky Way and beyond.For exclusive ask-us-anything episodes, join us for just $3 a month on Pat...

Is it possible that dark energy is not a constant, but rather is changing over time? Sean Carroll talks to us about how our understanding of dark energy evolved in recent history, and what is still left unknown.For exclusive ask-us-anything episod...

Dan and Shalma have a candid conversation about the state of dark matter research, and the ways the field has changed over the last few years.For exclusive ask-us-anything episodes, join us for just $3 a month on Patreon: https://patreon.com/whyth...

Why does something exist, rather than nothing? Special guest Sean Carroll helps us explore this deep philosophical question.For ad free episodes and other exclusives, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverse.Our ...

There has been some criticism of the process scientists use to check each other's work. Today we take a deep dive into peer review to determine how broken it really is.For ad free episodes and other exclusives, join us for just $3 a month on Patre...

Learn how Noether's profound mathematical theorem relating symmetries to conservation laws is deeply woven into the physics of the universe. Enjoy this rerun of an earlier episode as we take our summer break.For ad free episodes and other exclusiv...

We explore the diverse world of stars in the universe, from those similar to our Sun to those totally unrecognizable.For ad free episodes and other exclusives, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverseOur merch is...

Today's episode is all about the star in our front yard - the sun. Learn how it came to be, how it has changed, and how will it change in the future.For ad free episodes and other exclusives, join us for just $3 a month on Patreon: https://patreon...

Hear how the search for exoplanets has developed, and what surprises it has brought so far.For ad free episodes and other exclusives, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverseOur merch is available here: https://w...

Today we hear from someone who bore witness to the so-called “November Revolution” of particle physics in 1974.For ad free episodes and other exclusives, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverseOur merch is avail...

Pseudoscience can sometimes be hard to distinguish from the real thing. Today we discuss how philosophers of science have thought about this problem.For ad free episodes and other exclusives, join us for just $3 a month on Patreon: https://patreon...

The first episode in a new mini-series on philosophical problems in cosmology - Today we start with the origins of Western science and learn what the ancient Greeks thought about the cosmos.For ad free episodes and other exclusives, join us for ju...

Hear how a recent discovery of the motions of galaxies is changing how cosmologists are thinking about our universe.For ad free episodes and other exclusives, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverseOur merch is ...

Last year, an experiment called NanoGRAV made a surprising discovery of gravitational waves using pulsars around the universe. Special guest Chiara Mingarelli explains.For ad free episodes and other exclusives, join us for just $3 a month on Patre...

What's it like bringing science to the most general public audiences? How do you distill complex results into short news-worthy articles without getting lost in clickbait? Today we hear the perspective of New York Times science journalist Katri...

Quantum computing makes big promises, but how does it work? What is the real state of quantum computing today? Special guest Henry Lamm answers our questions.Our new merch is available here: https://www.shalmawegsman.com/why-this-univer...

Is the world around us real, or are we living in someone's computer program?Our new merch is available here: https://www.shalmawegsman.com/why-this-universeFor ask-us-anything segments and other exclusives, join us for just $3 a...

We hear two physicists describe their lives collecting data in remote locations, from deep underground in an active mine and from the South Pole.Our new merch is available here: https://www.shalmawegsman.com/why-this-universeFor...

Learn how the geometry of space defies our intuition, and why it gave Einstein so much anxiety.Our new merch is available here: https://www.shalmawegsman.com/why-this-universeFor ask-us-anything segments and other exclusives, jo...

Today we visit a turning point in the history of science: the discovery that the Earth is not at the center of the cosmos.Our new merch is available here: https://www.shalmawegsman.com/why-this-universeFor ask-us-anything segmen...

Dan moderates a lively discussion on extraterrestrial life at the Chicago Humanities Festival.Our new merch is available here: https://www.shalmawegsman.com/why-this-universeFor ask-us-anything segments and other exclusives, joi...