January 20, 2014

Inside-out Formation Of The Milky Way

Our galaxy most likely formed “inside-out” says new research from the Gaia-ESO project. By looking at the “metallicity” of stars with a wide range of ages and locations in the Galactic disc, researchers found that stars located on the inside of the Solar Circle—the orbit of our Sun around the center of the Milky Way—are older stars while one’s inside the disc are younger. They say their finding “provides exciting new evidence that the inner parts of the Milky Way’s thick disc formed much more rapidly than did the thin disc stars, which dominate near our Solar neighborhood.”

[ Read the Article: Gaia Confirms ‘Inside-Out’ Model Of Milky Way ]

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