Episode 315
Oumuamua Explained and Dark Matter Near Black Holes
Walkabout the Galaxy · Josh Colwell, Addie Dove, Audrey Martin
March 29, 202348m 52s
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Show Notes
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.