The Milky Way is considerably larger, bulkier, and spinning faster than astronomers once thought, Andromeda's equal.
Scientists mapped the Milky Way in a more detailed, three-dimensional way and found that it's 15 percent larger in breadth. More importantly, it's denser, with 50 percent more mass, which is like weight. The new findings were presented Monday at the American Astronomical Society's convention in Long Beach, Calif.
That difference means a lot, said study author Mark Reid of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass. The slight 5-foot-5, 140-pound astrophysicist said it's the cosmic equivalent of him suddenly bulking up to the size of a 6-foot-3, 210-pound NFL linebacker. More>>
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