Why do ring of a planet or a galaxy relatively flat?

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Like the saturn ring, why isn’t it surround the whole planet or the general shape of milky way galaxy is pretty much like a disc

Or the solar system

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Anonymous 0 Comments

If you wet a ball and spin it fast, the water will move to the middle and if you hold it over a piece if paper, the drops that are flung off will be in a line.

Once you get your head around the fact that all these planets are spinning around relatively fast, and the galaxy is essentially just the same thing on a much larger scale, it makes sense. The matter gets flung around like the drops coming off a ball

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