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 exclusives, join us for just $3 a month on Patreon: https://patreon.com/whythisuniverse Our merch is available here: https://www.shalmawegsman.com/why-this-universe

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/whythisuniverse Our merch is available here: https://www.shalmawegsman.com/why-this-universe

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.

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Is the world around us real, or are we living in someone's computer program?

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We hear two physicists describe their lives collecting data in remote locations, from deep underground in an active mine and from the South Pole.

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Learn how the geometry of space defies our intuition, and why it gave Einstein so much anxiety.

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Today we visit a turning point in the history of science: the discovery that the Earth is not at the center of the cosmos.

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Dan moderates a lively discussion on extraterrestrial life at the Chicago Humanities Festival.

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Where does the musical octave come from? What makes a C note a C? Why do different instruments sound different? Special guest Tim Cohen comes on to answer these questions and more.
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We tell the story of how the Universe developed large scale structure, starting from the Big Bang to today. It could have all turned out very differently, if not for some key players.

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Why This Universe hosts it's first ever live episode taping featuring guests Daniel Holz and Diana Powell. We discuss the possibility of intelligent life out in the Universe, the existential risks faced by humans on Earth, and the chance the intelligent life can persist in the Universe.

This conversation took place during the University of Chicago Podcast Network festival.

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CORRECTION: We misspeak about the time of the event in the episode, we are really on at 3-4 pm CST! Apologies!

Why This Universe is going live on October 3rd in Chicago, IL!

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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.com/whythisuniverse Our merch is available here: https://www.shalmawegsman.com/why-this-universe

While physicists overwhelmingly agree about the existence of dark matter, a select group of people aren't convinced. Instead, they believe we must be wrong about gravity, and claim we need a theory of modified gravity (MOND) instead. Recent press releases have claimed "smoking gun" evidence for this underdog theory, should we take them seriously?

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Today we are debunking the recent paper that claims our universe is much older than previously thought.

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For fun dinosaur facts and research, check out I Know Dino: The Big Dinosaur Podcast, on Apple or wherever you get your podcasts https://podcasts.apple.com/us/podcast/i-know-dino-the-big-dinosaur-podcast/id960976813?ign-mpt=uo%3D4&mt=2

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We are celebrating our 3 year anniversary with a throwback to one of our earliest episodes! Entanglement, wave-particle duality, and uncertainty - here's a breakdown of the weirdest and wildest things about quantum mechanics.

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Special guest Alan Lightman takes us through a fascinating discussion of consciousness, and tells us how he reconciles spirituality with his materialist views.
Todays episode is sponsored by the International Space Station. Join the ISS National Laboratory this August in Seattle at the 12th annual ISS Research and Development Conference. Visit ISSconference.org to register now.

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Shortly after the Big Bang, space was densely packed with enough stuff for sound to travel through it. What was producing sound in this era, and how can we hear it today?

Todays episode is sponsored by the International Space Station. Join the ISS National Laboratory this August in Seattle at the 12th annual ISS Research and Development Conference. Visit ISSconference.org to register now.

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Special guest Cari Cesarotti tells us why so many particle physicists are itching to build a whole new type of particle collider.

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The Big Bang is well accepted today as the leading theory of how our universe evolved over time - but in today's episode, we talk through all the very wrong theories that came before it.
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Can consciousness be explained by physics, or does it appeal to something beyond materialism? Philosopher guest star David Chalmers talks to us about how we can think about consciousness from a philosophical and scientific perspective.

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A whirlwind of questions brings us to an odd conclusion: could reality be an illusion created by a quantum fluctuation of a brain? This is a rebroadcast of a past favorite.

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Astronomers' newest telescope, JWST, just discovered galaxies that formed earlier than previously thought possible. What does this discovery mean for our understanding of the early universe?

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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/whythisuniverse Our merch is available here: https://www.shalmawegsman.com/why-this-universe

Before the LHC turned on in 2008, many feared that it would create a dangerous black hole that would destroy the world. Were any of those fears well-founded, and how seriously did scientists take these claims?

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Learn how extra dimensions of space might appear to us, and what physicists have done to try to find them.

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Special guest Katie Mack talks to us about how the universe might end.

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In today's different type of episode, we talk about the risks of a subtle kind of scientific misinformation.

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This episode will hurt your brain, or your money back.

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We interrupt our regular episodes to cover the exciting new discovery that the IceCube Neutrino Observatory announced on November 3rd, 2022.

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We pick up the story of string theory and explore the explosion of interest it experienced in the mid 1980s.

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Last time, we introduced the biggest open problem in theoretical physics - the problem of combining gravity with quantum mechanics. In this first part of a three-part series, we introduce the leading candidate for how to do that: String Theory.

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Quantum mechanics and general relativity are two of the most successful theories of science ever, but they don't necessarily fit together. Learn why physicists are trying so hard to discover a quantum theory of gravity, and why it's been such a challenge.

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We pick up last episode's theme of particle colliders and dive into the most exciting one running today - the LHC. What is it, how does it work, and what new physics can it still reveal?

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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/whythisuniverse Our merch is available here: https://www.shalmawegsman.com/why-this-universe

For the past century, physicists have been building particle colliders as a way to learn about the fundamental laws of physics. Today we talk about why smashing particles together has proven to be such a powerful tool.

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On May 12, 2022 astronomers revealed an image of the supermassive black hole at the center of our Milky Way galaxy. Today we tell the story of what made this image possible.

Today's episode is sponsored by Wren. Sign up through https://www.wren.co/universe to make a difference in the climate crisis, and Wren will plant 10 extra trees in your name!

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Just like water changing to ice when it freezes, there were times in the universe's early history when reality changed in almost an instant. Today we dive into these cosmological phase transitions, and speculate about the strange objects these types of instant changes can create.

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When cosmology was still an infant science, a daring physicist wrote a theory of the beginning of time.  We revisit this theory and see what value we can still glean from it today.

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Today we explore different interpretations of quantum mechanics, from Copenhagen to the many-worlds hypothesis, in an attempt to uncover what quantum reality really is. This episode is a rebroadcast of one of our early favorites.

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A whirlwind of questions brings us to an odd conclusion: could reality be an illusion created by a quantum fluctuation of a brain?

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Here on Earth, we are constantly being showered by particles from outer space called cosmic rays. What do we know about where these particles really come from?

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Today we are rebroadcasting an earlier episode all about extra dimensions - How many dimensions of space are there? Could there be extra dimensions that are hidden from view?

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Special guest Dr. Diana Powell gives us the lay down on the field of exoplanet research, and on how these recent discoveries may shed light on the question of extraterrestrial life.

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Today we attempt to break down the basics of quantum field theory - our deepest theory of physics yet.

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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.com/whythisuniverse Our merch is available here: https://www.shalmawegsman.com/why-this-universe

Some people like to claim that psychology is just applied biology, which is just applied chemistry, which is just applied physics, and so on. Is there any truth to this? Or is it just our egos getting the better of us?

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Dan shares one of the biggest stories of his career - his discovery of an excess of gamma rays at the center of the Milky Way. Is this a sign of dark matter, or is it something less mysterious?

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When different groups of astronomers measure the expansion rate of space, they get different answers. Who's right? Or are they both right, and new physics is afoot?

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Today we dive into the world's shiny new space telescope - JWST. Learn why are physicists and astronomers are so excited about it, and what new secrets of the universe it might reveal. Keep your eye out for its launch later this week!

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