About this episode

The episode discusses the evidence of second generation black hole mergers and new simulations regarding the early solar system's moons.

Exquisitely detailed measurements of the ripples in spacetime from the mergers of black holes now show that some of these merging black holes were, themselves, created by an earlier black hole merging event. While this had been suspected to take place, we now have clear evidence of it. On a less dramatic scale but much closer to home, new simulations of the early solar system suggest the large population of moons of Uranus needed help from a now long lost fifth giant planet to survive. Join us for all this, space news, trivia, and a generally good time.

People in this episode

Hosts: Joshua Colwell, Adrienne Dove, James Cooney

Topics covered

• black holes
• solar system
• spacetime
• planetary science
• space news
• trivia

Keywords

• black holes
• mergers
• spacetime
• Uranus
• giant planet
• solar system
• space news
• trivia

Mentioned in this episode

Places: Uranus, solar system, fifth giant planet

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• Whacky Black Hole Collisions and Strange Uranian Rings · May 20, 2026 · 50 min
• Little Plutino Has An Atmosphere and Making Sense of Saturn · May 13, 2026 · 47 min
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