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Janna Levin

@jannalevinastro.bsky.social

Theoretical Physicist. Astrophysicist. Book lover and writer. Professor Barnard/Columbia. Founding Director of Sciences @PioneerWorks, Founding editor-in-chief of Broadcast. Co-host of @quantamagazine podcast "The Joy of Why"

203 Followers  |  12 Following  |  8 Posts  |  Joined: 03.04.2025  |  1.8269

Latest posts by jannalevinastro.bsky.social on Bluesky

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Do Beautiful Birds Have an Evolutionary Advantage? | Quanta Magazine Richard Prum explains why he thinks feathers and vibrant traits in birds evolved not solely for survival, but also through aesthetic choice.

Birds aren't descended from dinosaurs. They 𝘒𝘳𝘦 dinosaurs. Tune in to "The Joy of Why" from @prx.org and @quantamagazine.bsky.social:

www.quantamagazine.org/do-beautiful...

BTW, this is our last episode of the season. See you all soon, and thanks for listening!

21.08.2025 13:49 β€” πŸ‘ 198    πŸ” 23    πŸ’¬ 6    πŸ“Œ 2
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Why Did The Universe Begin? | Quanta Magazine In this episode of The Joy of Why, Thomas Hertog discusses his collaboration with Stephen Hawking on a provocative theory arguing that the laws of physics evolved with the universe, and how this could...

Physicists often ponder β€œhow” the universe formed. But what does it even mean to ask β€œwhy” it began? Tune in to β€œThe Joy of Why” from @prx.org and @quantamagazine.bsky.social with co-host @jannalevinastro.bsky.social: www.quantamagazine.org/why-did-the-...

24.07.2025 20:43 β€” πŸ‘ 39    πŸ” 9    πŸ’¬ 5    πŸ“Œ 1
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Why Did The Universe Begin? | Quanta Magazine In this episode of The Joy of Why, Thomas Hertog discusses his collaboration with Stephen Hawking on a provocative theory arguing that the laws of physics evolved with the universe, and how this…

How could the universe have created the conditions needed for life to emerge? Tune in to β€œThe Joy of Why” from @prx.org and @quantamagazine.bsky.social with co-host @jannalevinastro.bsky.social.

28.07.2025 17:50 β€” πŸ‘ 16    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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How a Child Becomes a Scientists When We Were Kids

This piece originally appeared in β€œWhen We Were Kids: How a Child Becomes a Scientists.” The book features a remarkable contributor listβ€”Kurzweil, Dennett, Dawkins, Margulis, Dyson. I’ve included the Table of Contents at the close of this dispatch.

18.08.2025 18:05 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Why Did The Universe Begin? | Quanta Magazine In this episode of The Joy of Why, Thomas Hertog discusses his collaboration with Stephen Hawking on a provocative theory arguing that the laws of physics evolved with the universe, and how this…

The theoretical physicist Thomas Hertog believes that a sort of cosmological natural selection may have evolved our universe into one that is mysteriously fine-tuned for life. Tune in to β€œThe Joy of Why” with co-host @jannalevin:

30.07.2025 20:04 β€” πŸ‘ 35    πŸ” 9    πŸ’¬ 2    πŸ“Œ 0
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And Now For Something Not Exactly Completely Different Last week we got pretty dreamy with a meditation on the nothingness that remains in the wake of the death of a massive starβ€”the silent, unmarked threshold at the edge of a black hole. I tried to convi...

And Now For Something Not Exactly Completely Different. The upward lightcone emanating from the origin isthe causal future and the downward lightcone is the causal past. Tune in, tune out with a rare groove and yet another level of understanding by DJ Black Helmut.
Read more:
jannalevin.substack.com

30.07.2025 16:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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In How the Universe Got Its Spots, @jannalevinastro.bsky.social blends memoir & visionary science to provide a groundbreaking personal account of her life & ideas.

Listen to a sample chapter and save 50% on this thrilling #audiobook with code BLOOM50 at checkout: press.princeton.edu/ideas/listen...

02.05.2025 14:17 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

I haven't looked carefully enough at the calculations, but I suspect as long as it's planetary sized, so much smaller than a solar mass, a black hole could be the ninth planet. Some people have suggested planetary scale black holes formed earlier in the universe and also contribute to dark matter

10.07.2025 14:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Ah, for more on life in the universe, we just published a conversation, Scientific Controversies: Aliens, www.youtube.com/watch?v=CLlK...

10.07.2025 14:47 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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How Does Graph Theory Shape Our World? | Quanta Magazine Maria Chudnovsky reflects on her journey in graph theory, her groundbreaking solution to the long-standing perfect graph problem, and the unexpected ways this abstract field intersects with everyday…

Graph theorist Maria Chudnovsky proved the strong perfect graph theorem, which was proposed back in the 1960s. Tune in to β€œThe Joy of Why” with co-host @jannalevinastro.bsky.social:

04.07.2025 12:07 β€” πŸ‘ 19    πŸ” 7    πŸ’¬ 0    πŸ“Œ 0
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Billions of Exoplanets, Zero Aliens? We have sent landers to Mars, collected Moon regolith, returned samples from asteroids, beamed messages into space, and listened patiently for replies. Where are all the aliens?

Billions of Exoplanets, Zero Aliens?
This week, a rumination on UFO’s, disharmonious species, and extraterrestrials, inspired by Scientific Controversies: Aliens, a live event I hosted recently at Pioneer Works with astronomers Adam Frank and David Kipping.
open.substack.com/pub/jannalev...

09.07.2025 19:41 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Why Black Holes? I was chatting with a friend over some kind of caffeinated beverage when he asked me, β€œWhy Black Holes?” Here is my response–after I said, β€œSeriously. You haven’t read my books?”

I was chatting with a friend over some kind of caffeinated beverage when he asked me, β€œWhy Black Holes?” Here is my response–after I said, β€œSeriously. You haven’t read my books?”

Why Black Holes? by @JannaLevin open.substack.com/pub/jannalev...?

02.07.2025 16:09 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Are the aliens hiding? | Janna Levin and Lex Fridman
YouTube video by Lex Clips Are the aliens hiding? | Janna Levin and Lex Fridman

Are the Aliens Hiding? | Janna Levin and @lexfridman.bsky.social youtu.be/FcbQ3eZ6yC8?...

15.05.2025 12:13 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0
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Death Week | Broadcast Join us here, digital and disembodied, for a kaleidoscopic descent into what awaits us six feet under....

Death Week is upon us, a five-day descent into what awaits us six feet under. In honor of Venki Ramakrishnan’s landmark event at Pioneer Works tonight, Broadcast is taking a turn towards the existential. pioneerworks.org/broadcast/se...

29.04.2025 20:27 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Don't Come to My Grave Without a Drum | Broadcast Lines on death by the Persian master, selected by his translator Haleh Liza Gafori.

Death is alive and well in Rumi’s poetry. His translator for @nyrb-imprints.bsky.social, Haleh Liza Gafori, shares her favorite of his lines on dying for PW Broadcast. pioneerworks.org/broadcast/ru...

01.05.2025 20:58 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Will AI Ever Understand Language Like Humans? | Quanta Magazine AI may sound like a human, but that doesn’t mean that AI learns like a human. In this episode, Ellie Pavlick explains why understanding how LLMs can process language could unlock deeper insights into ...

Are large language models intelligent? Answering this question requires a messy blend of philosophy and semantics. Ellie Pavlick savors the task. Tune in to β€œThe Joy of Why” with co-host @jannalevinastro.bsky.social:
www.quantamagazine.org/will-ai-ever...

01.05.2025 14:32 β€” πŸ‘ 16    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0
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Can Quantum Gravity Be Created in the Lab? | Quanta Magazine Quantum gravity could help physicists unite the currently incompatible worlds of quantum mechanics and gravity. In this episode, Monika Schleier-Smith discusses her pioneering experimental approach,…

Monika Schleier-Smith is shooting clouds of atoms with laser cooling technology to understand the building blocks of gravity. Listen to β€œThe Joy of Why” with co-host @stevenstrogatz.com:

18.04.2025 20:04 β€” πŸ‘ 31    πŸ” 8    πŸ’¬ 0    πŸ“Œ 1
N.K. Jemisin and Janna Levin on the Power of Science Fiction and Our Apocalyptic Reality
YouTube video by Pioneer Works N.K. Jemisin and Janna Levin on the Power of Science Fiction and Our Apocalyptic Reality

Few authors have reshaped the landscape of speculative fiction like @nkjemisin.bsky.social. The writer joined @jannalevinastro.bsky.social at Pioneer Works to talk science vs. fiction, Far Sector, and our apocalyptic reality. www.youtube.com/watch?v=XBb0...

18.04.2025 17:35 β€” πŸ‘ 40    πŸ” 20    πŸ’¬ 2    πŸ“Œ 2
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From Far Sector to the Broken Earth Trilogy,
@nkjemisin.bsky.social is constantly exploring the push and pull between innate and societal power. The writer sat down with @jannalevinastro.bsky.social to discuss how fantasy worlds can predict the future. www.youtube.com/watch?v=XBb0...

21.04.2025 14:33 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Why We Die | Broadcast Venki Ramakrishnan says there's no gene for death.

β€œThe death of an animal or a human is really the death of the vessel.” Ahead of his conversation with @jannalevinastro.bsky.social tonight, Nobel laureate Venki Ramakrishnan weighs in on the new science of dying. pioneerworks.org/broadcast/wh...

29.04.2025 20:28 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Birdbrains Are Brilliant. Neuroscientists Agree
YouTube video by Pioneer Works Birdbrains Are Brilliant. Neuroscientists Agree

Bird brains are brilliant. Neuroscientists agree. For the latest episode of Scientific Controversies, Janna Levin sat down with ErichJarvis and Lauren Riters to discuss the fascinating neuroscience behind bird language, vocal learning, and flocking. youtu.be/b9wyVB3rGns

24.02.2025 16:20 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 0    πŸ“Œ 1

Ewin Tang went to college at 14. As a senior, she upended a claim about quantum computers by proving that a classical algorithm could outperform its quantum counterpart. Catch my convo with Ewin on this week’s episode of β€œThe Joy of Why,” from @quantamagazine

03.04.2025 18:32 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

@jannalevinastro is following 12 prominent accounts