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1 .This is Scientific American's 60-Second Space, I'm John Matson. Got a minute?
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2 .There's an old-timer in the neighborhood, and it's got a story to tell.
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3 .A new study of a relatively nearby old star shows that it's almost as old as the big bang itself.
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4 .The star HD 140283 lies about 190 light-years away in the constellation Libra.
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5 .Astronomers have long known that it's ancient, because it contains mostly hydrogen and helium
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6 .which were present at the dawn of the universe, and few of the heavy elements that were forged later in stellar furnaces.
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7 .With the Hubble Space Telescope, researchers have now pinned down the distance to HD 140283,
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8 .which allowed them to determine how bright the star is.
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9 .Along with the chemical composition of the star, the newly derived stellar properties allowed for a new age estimate.
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10 .The study of HD 140283, in the Astrophysical Journal Letters, found that the star is 14.46 billion years old.
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11 .But the entire universe, as you may have heard, is only 13.77 billion years old.
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12 .The two age estimates aren't actually in conflict, because there's always some uncertainty.
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13 .The full age estimate is thus 14.46 billion years plus or minus 800 million years.
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14 .Put your money on the minus.
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15 .Thanks for the minute, for Scientific American's 60-Second Space. I'm John Matson.
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