Interstellar Star Scars and Poop on Mars

from Walkabout the Galaxy · host Josh Colwell, Addie Dove, Audrey Martin

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.

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This episode is 38 minutes long.

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This episode was published on December 10, 2025.

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