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Moonmoons, Gravitons, and More!
StarTalk Radio
Are They as Flat as a Pancake?
Our galaxy is flat, other spiral galaxies are flat, and they're really flat. Milky Way is about 100 times as wide as across as it is thick. That's way thinner than a pancake. So you get these shapes when that happens. And by the way, all disks are made that way. The quiescent disk, the disk that form around black holes. Yeah, it's a general phenomenon in the galaxy.
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