View Full Version : Why Are Galaxies Smooth? Star Streams

2009-May-02, 12:40 AM
Look at the disk of any large spiral galaxy, and outwardly it appears smooth, with stars evenly distributed throughout. But when young stars are forming, they are clustered together in dense clouds of dust and gas. So what happens as the galaxy matures to allow for the smooth distribution seen in galaxies like the [...]

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