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Rotation Curve for Galaxy

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Uploaded by on Jan 16, 2008

The rotation curve of a system can tell us quite a bit about how the mass is distributed. For galaxies, there is a surprising amount of mass out from the center revealed by galactic rotation curves.

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  • Thanks for showng this. The Milky Way is more than 130,000 lightyears wide and 10,000 to 15,000 lightyears thick. It contains more than 400 billion stars.

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