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Hubble 'Scrapbook' Sheds Light on Milky Way's Evolution

The U.S. space agency, NASA, released a series of photos that show how our galaxy, the Milky Way, may have evolved. Astronomers used Hubble's deep-sky surveys to study the evolution of 400 galaxies similar to the Milky Way and noted their appearance at various stages of development over a time span of 11 billion years. Judging from images of these far-flung galaxies, they found the Milky Way likely began as faint, blue, low-mass object containing lots of gas. Gas is the fuel for...

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