Ripples on the Cosmic Ocean

Ripples on the Cosmic Ocean

Author: The Planetary Society October 29, 2025 Duration: 1:09:09
Historian Dagomar Degroot joins Planetary Radio to discuss his new book, “Ripples on the Cosmic Ocean: An Environmental History of Our Place in the Solar System,” which reveals how events across the Solar System have shaped life on Earth.

Every week, Planetary Radio: Space Exploration, Astronomy and Science charts the human adventure from our own Solar System out to the distant cosmos. This isn't just a recap of headlines; it's a direct conversation with the people making discovery happen. Host Sarah Al-Ahmed guides these discussions, sitting down with the engineers plotting spacecraft trajectories, the scientists interpreting data from alien worlds, and the astronauts who have experienced orbit firsthand. The Planetary Society's own advocates and experts, like Bill Nye and Bruce Betts, frequently join in to offer their unique perspective, making complex topics both accessible and genuinely exciting. You'll hear the latest on robotic missions to Mars, the search for exoplanets, and the technology pushing our boundaries. Alongside these deep dives, the podcast includes lighter, regular segments designed to inform and entertain, turning abstract concepts into engaging stories. It’s a comprehensive audio journey for anyone curious about our place in the universe, offering both the grand vision of exploration and the detailed human stories behind it. Tune in to let your curiosity roam as far as the subjects covered in each episode of this essential science podcast.
Author: Language: en-us Episodes: 100

Planetary Radio: Space Exploration, Astronomy and Science
Podcast Episodes
Kosmos 482: The Soviet-era Venus probe that fell to Earth [not-audio_url] [/not-audio_url]

Duration: 52:29
A Soviet-era Venus probe, Kosmos 482, spent 53 years in Earth's orbit before crashing back to the planet. Seismologist Ben Fernando explains its history, reentry, and how seismic technology could help track space debris.
TOI-270 d: Unveiling the secrets of a sub-Neptune [not-audio_url] [/not-audio_url]

Duration: 59:30
Explore the atmosphere of TOI-270 d with planetary geochemist Chris Glein as he unravels the secrets of this distant sub-Neptune using JWST data and geochemical modeling.
Live from Washington, D.C.: The future of space politics [not-audio_url] [/not-audio_url]

Duration: 1:13:53
Join Sarah Al-Ahmed and Casey Dreier for a special live recording of Planetary Radio at the Johns Hopkins University Bloomberg Center in Washington, D.C., immediately following The Planetary Society’s Day of Action.