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1 .This is Scientific American 60-Second Science. I'm Karen Hopkin. This'll just take a minute.
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2 .As kids, many of us pondered what stars are made of.
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3 .Some grown-up astronomers, on the other hand, wonder about where stars came from.
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4 .Now, a study serves up a surprise.
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5 .Because it seems that the smallest galaxies in the universe gave rise to an unexpectedly large proportion of stars.
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6 .The findings are in the Astrophysical Journal.
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7 .Most of the stars we see in the sky were formed when the universe was young, just a few billion years after the Big Bang.
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8 .So to study stellar origins, scientists use telescopes that allow them to see galaxies that are so far away, they're essentially looking back in time.
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9 .Previous observations had focused on the star-forming powers of larger galaxies.
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10 .But in this latest study, researchers used data collected by a powerful camera aboard the Hubble Space Telescope.
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11 .With this instrument, they could eyeball smaller, dwarf galaxies.
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12 .And they found that these diminutive dynamos churned out stars at a furious rate, fast enough to double their mass in only 150 million years.
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13 .That reproductive feat would take most so-called "normal" galaxies one to three billion years.
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14 .Seems the universe has long known what Danny Devito, Michael J.Fox and Dustin Hoffmann later proved:
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15 .You don't have to be big to have real star power.
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16 .Thanks for the minute, for Scientific American 60-Second Science. I'm Karen Hopkin.
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