Walkabout the Galaxy

Author: Joshua Colwell, Adrienne Dove, and James Cooney

An irreverent and informative tour of the latest, greatest, and most interesting discoveries in astronomy.
Be a guest on this podcast

Language: en

Genres: Comedy, Natural Sciences, Science

Contact email: Get it

Feed URL: Get it

iTunes ID: Get it

Get all podcast data

Listen Now...

Second Generation Black Hole Mergers and Solar System Chaos
Episode 425
Wednesday, 3 June, 2026

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.