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Starless cloud cores reveal why some stars are bigger than others

December 20, 2013

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Massive stars--those at least eight times the mass of the sun--present an intriguing mystery: How do they grow so large when the vast majority of stars in the Milky Way are considerably smaller? To find the answer, astronomers used the Atacama Large Millimeter/submillimeter Array telescope to look inside the cores of some of the darkest, coldest and densest clouds in the galaxy. What they found could explain starless cloud formation.Full Story

National Radio Astronomy Observatory

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