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Walkabout the Galaxy

Walkabout the Galaxy

By: Joshua Colwell Adrienne Dove and James Cooney
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About this listen

 The accidentally educational astronomy podcast, Walkabout the Galaxy provides an entertaining and easy-to-understand look at the latest fascinating news and discoveries in astronomy and space science, with a dash of trivia and rocket news.Joshua Colwell Nature & Ecology Science
Episodes
  • Gravothermalizing and Baby Black Holes

    Gravothermalizing and Baby Black Holes
    Dec 4 2025

    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.
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    47 mins
  • An Ancient Moon of Mars?

    An Ancient Moon of Mars?
    Nov 26 2025

    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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    43 mins
  • Why Is There A Universe At All?

    Why Is There A Universe At All?
    Nov 20 2025

    Things would be a lot simpler and a lot less interesting if charge parity existed in the universe, but there would be no one to appreciate that simplicity because we would not exist! New results from the Large Hadron Collider provide a hint at explaining why there is matter in the universe and it was not all eliminated in a dramatic annihilation of matter-antimatter collisions. So, that's a relief! And we have space news, meta-trivia, solar system news and more. Join us, won't you?
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    36 mins
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