#22 Sara Walker - Origin of Life, Assembly Theory, Biosignatures

Update: 2025-05-18

Description

In this week's episode, David is joined by Sara Imari Walker, Professor of Earth & Space Exploration at the Arizona State University. Prof Walker has spent the last few years developing a new concept in astrobiology known as assembly theory, which we explore in this episode.

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Comments

In Channel

#25 Matt O'Dowd - PBS Spacetime, Science on YouTube, Quasars

2025-09-0601:39:16

#24 Colin Hill - Modern Cosmology, Hubble Tension, Exotic Physics

2025-08-0801:55:19

#23 Geraint Lewis - Fine-Tuning, Multiverse, Cosmological Tensions

2025-06-2601:17:21

#22 Sara Walker - Origin of Life, Assembly Theory, Biosignatures

2025-05-1801:10:35

#21 Edwin Kite - Early Mars, Terraforming/Settling Mars

2025-04-2501:18:42

#20 Natalie Batalha - Kepler Mission, Exoplanets with JWST, Future Imagers

2025-03-1201:00:02

#19 Brian Keating - Inflation, B Modes and Losing the Nobel Prize

2025-02-0801:53:29

#18 Nick Searra - Alien Communication, Golden Record, Future Relics

2025-01-1501:15:06

#17 Adam Riess - Modern Cosmology, Hubble Tension, New Physics

2024-11-0901:03:13

#16 Janna Levin - Black Holes, Singularities & Wormholes

2024-10-0701:18:18

#15 Jackie Faherty - Brown Dwarfs, Clouds, Atmospheres, JWST

2024-07-1001:36:35

#14 Gavin Schmidt - Climate Science, Projections, Measurements, Denialism

2024-06-2201:34:56

#13 David Spergel - NASA UAP Taskforce, Dark Matter, Hubble Tension, Leadership

2024-05-0401:11:54

#12 Lisa Kaltenegger - Alien Earths, Astrobiology Controversies, Frequency of Life

2024-04-1601:32:04

#11 Paul Sutter - Rescuing Science, Restoring Trust In an Age of Doubt

2024-03-3001:28:01

#10 - Viraj Pandya - Early Galaxies with JWST, Galaxies "Gone Bananas", Galaxy Formation

2024-02-0901:13:56

#9 Renée Hložek - Axions, Tracing Dark Matter, Fate of the Universe

2023-12-1958:47

#8 Malena Rice - Planet Nine, Oumuamua, Misaligned Exoplanets

2023-11-2401:05:23

#7 Ramesh Narayan - Black Holes, Extreme Astrophysics, Event Horizon Telescope

2023-10-2001:01:49

#6 Adam Frank - Technosignatures, Semantic Information, Galactic Colonization

2023-09-1401:16:10

00:00

#22 Sara Walker - Origin of Life, Assembly Theory, Biosignatures

#box-pro-ellipsis-175747530821934{-webkit-line-clamp:2;}#22 Sara Walker - Origin of Life, Assembly Theory, Biosignatures

#22 Sara Walker - Origin of Life, Assembly Theory, Biosignatures

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#22 Sara Walker - Origin of Life, Assembly Theory, Biosignatures