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

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Planetary Nebulae and Active Asteroids Get a Closer Look
Episode 417
Thursday, 5 February, 2026

There's always been a fuzzy line between asteroids and comets, and new observations of asteroids in the vicinity of Jupiter provide a hint to the origin of the mysterious active asteroids that look like asteroids but act like comets. Elsewhere in the galaxy, the famous ring nebula gets a new spectral image that shows the presence of band of iron. Could it be the remnants of a planet like Earth or Mercury that was vaporized when the nebular formed? Tune in for our take on this, space news, trivia and much more.

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