Space Science podcasts

Fraser Cain and Pamela L. Gay examine possible futures of the universe across vastly different timescales. Topics include the Milky Way and Andromeda, cosmic isolation as expansion continues, the fading microwave background, the end of star formation and the era of stellar remnants. They discuss uncertain processes such as proton decay, black-hole evaporation through Hawking radiation, entropy and heat death, alongside alternative outcomes if dark energy evolves. These are model-dependent projections. Pamela Gay is a senior scientist at the Planetary Science Institute. Published on 21 September 2026, the episode appears in the feed as The Beginning and End of Everything, Part 2. Its original duration is 37 minutes 7 seconds.

Hosted by Fraser Cain, Pamela L. Gay

This edition of The Science Show covers extinct big cats and early humans, the material properties behind durable Roman concrete, the history of technological disruption by space weather, and methane-consuming microorganisms living in tree bark.

Hosted by Robyn Williams, Belinda Smith

Fraser Cain and Pamela L. Gay explore what cosmology can establish about the universe’s earliest history and where knowledge remains limited. The discussion covers inflation, the separation of forces, the emergence of particles and nuclei, and density fluctuations that seed later structure. Recombination and the cosmic microwave background lead into the dark ages, the first stars and reionization, with observations including JWST helping test models of the early universe. Pamela Gay is a senior scientist at the Planetary Science Institute. This Astronomy Cast episode was published on 14 September 2026; its publisher feed labels it The Beginning and End of Everything, Part 1. The original duration is 39 minutes 27 seconds.

Hosted by Fraser Cain, Pamela L. Gay

University of Arizona planetary scientist Daniel Apai joins Tim Swindle to discuss the Pandora Space Telescope and its potential to reveal the properties of exoplanets and their atmospheres. This Arizona Science episode examines the scientific questions addressed by the observatory as it returns data from Earth orbit. Published on 10 September 2026; listen through Arizona Public Media’s episode page.

Hosted by Tim Swindle

C&EN journalists examine the chemistry behind sustaining human activity beyond Earth. Topics include obtaining useful resources, designing materials and understanding the practical constraints of living and working in space. The episode connects chemical research with planetary resources and engineering.

Hosted by Craig Bettenhausen

This episode examines whether manufacturing pharmaceuticals and biomedical materials in microgravity can become practical, with Julia Vaz and Michael Greshko. Kevin McLean speaks with Mads Peter Heide-Jørgensen about narwhals collecting oceanographic measurements that reveal Atlantic warming in East Greenland fjords. In the book segment, Angela Saini interviews Priyambada Jayakumar about her biography of agricultural scientist M. S. Swaminathan. The publisher provides a full transcript and external audio.

Hosted by Sarah Crespi, Angela Saini

Nature reporters explain why record ocean temperatures associated with an intensifying El Niño could weaken marine carbon sinks. The episode also covers radiation protection for astronauts, thunder-based underground geology and experimental mitochondrial injections for vision loss.

Nature reporters discuss evidence for a distant Jupiter-mass exosatellite and the discovery of a rare transmissible cancer in wild catfish.

Nature staff discuss the discovery of a four-carbon sugar molecule in interstellar space and a newly decoded formula that identifies a Maya mathematician.

A Nature Podcast episode examines a compact orbital detector designed to identify hidden nuclear devices and research on threats to Indigenous plant knowledge.

Sonia Tikoo explores the unresolved history of the Moon’s magnetic field. Lunar samples indicate a strong early field followed by a much weaker field that persisted far longer than expected. The discussion weighs proposed dynamo mechanisms, paleomagnetic measurements and the difficulty of explaining both the field’s early strength and its long-lived weak tail.

Hosted by Oliver Strimpel

Harry Bevins discusses REACH, a South African global 21-centimetre experiment, and the proposed lunar-orbit Cosmocube mission. Claire Davies discusses academic experience, while Soheb Mandhai describes simulation research and postdoctoral work at Manchester.

Hal Levison explains how Jupiter’s Trojan asteroids could help distinguish competing accounts of Solar System evolution. The discussion compares scenarios in which giant planets formed near their present orbits with models involving substantial migration from a more compact configuration. It considers why the Lucy spacecraft’s observations can test these ideas and how discoveries of other planetary systems sharpen the questions.

Håkon Dahle discusses observations from the James Webb Space Telescope and what researchers have learned from them. Conversation in Norwegian.

Sean Carroll and astronomer Natalie Batalha discuss the transition from discovering individual exoplanets to systematically understanding planetary populations. They explore how frequently stars host planets, how planetary sizes and orbital distances are distributed, and what observations can reveal about atmospheres and possible habitats for life. Batalha draws on her experience with NASA's Kepler mission to explain what researchers have learned and which questions future observations may answer.

Hosted by Sean Carroll

Håkon Dahle discusses the James Webb Space Telescope and the astronomical questions its instruments were designed to investigate. Conversation in Norwegian.

Pål Brekke discusses the physics of auroras and Kristian Birkeland's role in explaining their origin. Conversation in Norwegian.

Eirik Newth discusses the history of space exploration, from human missions to robotic exploration of the Solar System. Conversation in Norwegian.