Ripples on the Cosmic Ocean

Ripples on the Cosmic Ocean

What happens in space doesn’t stay in space. Historian Dagomar Degroot joins Planetary Radio host Sarah Al-Ahmed to explore how shifting solar cycles, volcanic eruptions on Venus, Martian dust storms, and even mistaken sightings of lunar forests have influenced life, science, and society on Earth. His new book, “Ripples on the Cosmic Ocean: An Environmental History of Our Place in the Solar System,” reframes the Solar System as part of our cosmic environment, one that has shaped humanity’s past and will define our future.

Then, Planetary Society Director of Government Relations Jack Kiraly updates us on the latest developments in space policy, including the ongoing search for NASA’s next administrator and proposed changes to the Artemis program’s launch vehicles. And stick around for Bruce Betts, The Planetary Society’s chief scientist, in What’s Up.

Discover more at: https://www.planetary.org/planetary-radio/2025-ripples-on-the-cosmic-ocean

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Episoder(1313)

Space Policy Edition: What went wrong with Mars Sample Return

Space Policy Edition: What went wrong with Mars Sample Return

NASA’s Mars Sample Return mission was supposed to be lean, fast, and focused — no extra science instruments, no dedicated communications systems, and launching in 2026. But the effort has foundered un...

3 Nov 20231h 28min

Psyche and Eclipse Company blast off

Psyche and Eclipse Company blast off

On October 13, 2023, NASA's Psyche mission's principal investigator, Lindy Elkins-Tanton, watched her team's spacecraft blast off on its voyage to explore a metallic asteroid. She joins Planetary Radi...

1 Nov 202358min

Simulating Psyche: Modeling craters on a metallic world

Simulating Psyche: Modeling craters on a metallic world

NASA's Psyche mission launched on Oct. 13, 2023 on a journey to explore its namesake, the metallic asteroid Psyche. Simone Marchi, co-investigator for the Psyche mission, joins Planetary Radio to shar...

25 Okt 202355min

InSight's revelation on Mars’ rotation

InSight's revelation on Mars’ rotation

Data from the now-retired NASA InSight mission suggests that Mars' rotation is speeding up. The InSight RISE instrument's principal investigator, Sebastien Le Maistre, from the Royal Observatory of Be...

18 Okt 202359min

Celebrating the OSIRIS-REx sample return

Celebrating the OSIRIS-REx sample return

On September 24th, NASA's OSIRIS-REx spacecraft triumphantly delivered a sample from asteroid Bennu to Earth. Rae Paoletta, the Director of Content and Engagement at The Planetary Society, joins Plane...

11 Okt 202357min

2023 NASA Innovative Advanced Concepts Symposium: Part 2

2023 NASA Innovative Advanced Concepts Symposium: Part 2

Join Planetary Radio host Sarah Al-Ahmed for part two of her trip to the 2023 NASA Innovative Advanced Concepts (NIAC) Symposium in Houston, Texas.  You'll hear from Mike LaPointe and John Nelson, the...

4 Okt 202349min

2023 NASA Innovative Advanced Concepts Symposium: Part 1

2023 NASA Innovative Advanced Concepts Symposium: Part 1

Join Planetary Radio host Sarah Al-Ahmed on a trip to the 2023 NASA Innovative Advanced Concepts (NIAC) Symposium in Houston, Texas. In this jam-packed two-part series, you'll hear Sarah's interviews ...

27 Sep 202359min

Alone but not lonely with Louis Friedman

Alone but not lonely with Louis Friedman

Louis Friedman, one of the three co-founders of The Planetary Society, joins Planetary Radio to discuss his new book, "Alone but Not Lonely: Exploring for Extraterrestrial Life." The book takes us on ...

20 Sep 202358min

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