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This image provided by NASA Tuesday Oct. 2, 2007 shows a Hubble Space Telescope image of thousands of sparkling young stars nestled within the giant nebula NGC 3603. This stellar "jewel box" is one of the most massive young star clusters in the Milky Way Galaxy. NGC 3603 is a prominent star-forming region in the Carina spiral arm of the Milky Way, about 20,000 light-years away. This latest image from NASA's Hubble Space Telescope shows a young star cluster surrounded by a vast region of dust and gas. The image reveals stages in the life cycle of stars. AP Photo/NASA)

Stars collide

The Milky Way is bound for a head-on collision with similar-sized Andromeda galaxy, researchers announced, May 31. Over time, the huge galactic smashup will create an entirely new hybrid galaxy.