Ho'oleilana and Weird Spots on Mercury

from Walkabout the Galaxy · host Josh Colwell, Jim Cooney, Audrey Martin

This episode is about hollows in space on very different scales and for very different reasons. Ho'oleilana is the largest observed structure in the universe, a bubble of sorts defined by great sheets of galactic superclusters whose size is a reflection of acoustic oscillations in the very early universe. Closer to home, we take a look at mysterious hollows on Mercury indicative of some sort of recent geologic activity. Join us to learn about these strange features, space news, radiation trivia and that unmistakable astroquark spark.

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This episode is 53 minutes long.

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This episode was published on September 13, 2023.

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