Questioning a galactic star-forming model. (stars in Milky Way's central bulge younger than previously believed) (Brief Article)

From: Science News | Date: November 13, 1993| Author: | Copyright information

Like the two halves of a watermelon, concentrations of stars and gas sit above and below the disk of our galaxy. Astronomers have long believed that this dense central bulge, which makes up about onefifth of the Milky Way's visible mass, contains many of the oldest stars in the galaxy, But a new study suggests that a significant number of stars in the bulge are not elderly, just middle-aged.

This finding, along with observations of three neighboring galaxies, flies in the face of conventional wisdom, which holds that the densest parts of a galaxy make most of their stars ...

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