PodcastsComedyWalkabout the Galaxy

Walkabout the Galaxy

Joshua Colwell, Adrienne Dove, and James Cooney
Walkabout the Galaxy
Latest episode

357 episodes

  • Walkabout the Galaxy

    Crazy Spinners in the Asteroid Belt and S8 Tension

    14/1/2026 | 46 mins.
    The amazing discoveries from the Vera C. Rubin Observatory have already started, and the astroquarks take a look at some close to home. Asteroids bigger than a city block spinning in fewer than 5 minutes are just the beginning, and will change our understanding of the collisional evolution of the asteroid belt. The astroquarks muse on the biggest questions in astronomy today, and one of those, the so-called "S8 Tension" has a possible solution with the help of dark matter and neutrinos. Join us for all that, space news, trivia, and more.
  • Walkabout the Galaxy

    Cosmic Rays from Everywhere and Stringy Ancient Galaxies

    17/12/2025 | 42 mins.
    The Parker Solar Probe flies through the Sun's corona, MAVEN has gone silent, and new data shed light on the origins of cosmic rays. JWST's observations of ancient galaxies reveal odd shapes that may be connected to dark matter. Join us for a year-end look at the latest discoveries and space news and much more.
  • Walkabout the Galaxy

    Interstellar Star Scars and Poop on Mars

    10/12/2025 | 38 mins.
    We explore the dining and drinking choices for astronauts, complex chemicals discovered in asteroid samples, and untangling the web of scars in the local interstellar cloud to reveal past encounters of the Sun with some hot stellar neighbors. If you wish you had more hot stellar neighbors, you should definitely check out this episode of Walkabout the Galaxy.
  • Walkabout the Galaxy

    Gravothermalizing and Baby Black Holes

    04/12/2025 | 46 mins.
    There's a new funky proposal for small black holes in the early universe, and another potential dark matter candidate. Learn about cannibal stars and much more, together with double trivia and space news with your friendly neighborhood astroquarks.
  • Walkabout the Galaxy

    An Ancient Moon of Mars?

    26/11/2025 | 43 mins.
    The story behind this investigation is almost more cool than the discovery itself. Microlayers of sediments in Mars' Gale Crater, observed by NASA's Curiosity rover, are indicative of tidal sloshing of water in the lake that once filled the crater. Problem is, the age of the rocks and the magnitude of the tides would require a different moon than the ones currently there. Cool! Join us to hear about that, interstellar comet 3I/Atlas, and much more.

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About Walkabout the Galaxy

An irreverent and informative tour of the latest, greatest, and most interesting discoveries in astronomy.
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