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Walkabout the Galaxy

May 30, 2024

New observations of Erigone, the parent body of an asteroid family, indicate its rocks are juicy with water. That makes it both a potential resource for future missions but also shows that asteroids may have played a big role in delivering water to the early Earth. Watery Erigone: it rhymes! You'll have to listen...


May 15, 2024

The Astroquarks delve into the possibility of giant alien constructs around stars, and the strange weather on a planet that is unreasonably close to its star. Join us for space news, trivia, and a fun exploration of odd topics in astronomy on Walkabout the Galaxy.


May 8, 2024

NASA's Lucy mission discovered a surprising moon of the small asteroid Dinkinesh on its way to the orbit of Jupiter. New studies of that moon, a contact binary, suggest it may have a surprisingly young age. Meanwhile, cosmologists continue to wrestle with various seemingly contradictory measurements. One model suggests...


May 1, 2024

A clever test of dark matter and an alternative theory of gravity to explain the motions of stars around galaxies results in another check in the win column for dark matter. Simulations with the modified model of gravity failed to explain the motions in the inner regions of galaxies. Meanwhile the search for a...


Apr 3, 2024

Analysis of the samples returned from the asteroid Bennu have revealed surprising assemblages of minerals that put new constraints on the origin of the solar system. And once Top Quark Jim Cooney stops giggling, he tells us about the discovery of an itsy-bitsy galaxy, if you can call it that, orbiting the Milky way. It...