Oumuamua Explained and Dark Matter Near Black Holes

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

That interstellar comet appears to have gotten its odd behavior from the natural rocket effect of hydrogen gas being released near the Sun and not, sadly, alien rocket technology. The universe is still a cool and interesting place, though, and a new clever measurement of stars orbiting black holes shows evidence for a pile-up of dark matter around the black holes, giving us another way to study this mysterious stuff.

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This episode is 48 minutes long.

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This episode was published on March 29, 2023.

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