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The Hidden Ocean of Ariel: Tidal Forces and the Case for a Watery Past

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Manage episode 520484896 series 3561088
Content provided by SETI Institute. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by SETI Institute or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Could Uranus's moon Ariel have once harbored a vast, deep ocean beneath its icy crust—perhaps even one that still lingers today? In this episode of SETI Live, host Beth Johnson welcomes Caleb Strom (University of North Dakota) and Alex Pathoff (Planetary Science Institute) to discuss new research revealing evidence that Ariel may have once held a subsurface ocean over 170 kilometers deep. Using geological mapping and tidal‐stress modeling, the team shows how ancient fractures and ridges on Ariel's surface hint at powerful internal forces and a dynamic, watery past. This discovery expands the growing family of "ocean worlds"—planets and moons that may have once supported (or could still support) conditions for life. What does this mean for future exploration of the Uranus system, and what could we learn by going there? 🔗 Press release: https://www.psi.edu/blog/evidence-of-a-past-deep-ocean-on-uranian-moon-ariel/ 📄 Paper: https://www.sciencedirect.com/science/article/abs/pii/S0019103525003707 (Recorded live 23 October 2025.)

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128 episodes

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Manage episode 520484896 series 3561088
Content provided by SETI Institute. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by SETI Institute or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Could Uranus's moon Ariel have once harbored a vast, deep ocean beneath its icy crust—perhaps even one that still lingers today? In this episode of SETI Live, host Beth Johnson welcomes Caleb Strom (University of North Dakota) and Alex Pathoff (Planetary Science Institute) to discuss new research revealing evidence that Ariel may have once held a subsurface ocean over 170 kilometers deep. Using geological mapping and tidal‐stress modeling, the team shows how ancient fractures and ridges on Ariel's surface hint at powerful internal forces and a dynamic, watery past. This discovery expands the growing family of "ocean worlds"—planets and moons that may have once supported (or could still support) conditions for life. What does this mean for future exploration of the Uranus system, and what could we learn by going there? 🔗 Press release: https://www.psi.edu/blog/evidence-of-a-past-deep-ocean-on-uranian-moon-ariel/ 📄 Paper: https://www.sciencedirect.com/science/article/abs/pii/S0019103525003707 (Recorded live 23 October 2025.)

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128 episodes

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