"Why do we see spiral arms in some galaxies?" (Ask an Astronomer) from Ask an Astronomer

Ask an Astronomer

NASA's Spitzer Science Center / IPAC / NASA / Caltech

"Why do we see spiral arms in some galaxies?" (Ask an Astronomer)

1 seconds Posted Oct 25, 2005 at 12:00 am.

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'Ask an Astronomer' explains the morphology of one of the most common types of galaxy.