4min chapter

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#154 – Avi Loeb: Aliens, Black Holes, and the Mystery of the Oumuamua

Lex Fridman Podcast

CHAPTER

What Is the Tail of a Comet?

A comet is a rock that has some water ice on the surface. So you can think of it as an icy rock. In addition to water, there are all kinds of carbon-based molecules or dust that comes off the surface. You see these commentary tails that look very prominent because they reflect sunlight. And in this case, there was no trace of anything.

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