Space ‘rain’ and black holes solve galactic star-making mystery

March 12, 2015 5:03 PM

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Space ‘rain’ and black holes solve galactic star-making mystery

File photo - an expanding shell of debris called SNR 0519-69.0 is left behind after a massive star exploded in the Large Magellanic Cloud, a satellite galaxy to the Milky Way. (REUTERS/NASA/CXC/SAO/Handout via Reuters)

For decades, the reason why some galaxies produce more stars than others has remained a mystery. The Milky Way, for instance, produces one new star a year while the Baby Boom Galaxy produces 4,000 per year, or one star every 2.2 hours. On the opposite end of the spectrum, some galaxies are barren, p...

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