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This is Scientific American's 60-Second Science. I'm Karen Hopkin.This'll just take a minute.

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You've heard the saying "thank your lucky stars."

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Well, in the January 1st issue of Science, astronomer Kenneth Lang of Tufts University says it's not the stars that are lucky,

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but the folks study them.

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Because some of the biggest discoveries about our universe were stumbled on.

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Four hundred years ago, Galileo raised his homemade spyglass to the sky and spotted four of Jupiter's moons,

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revealing that other planets could have their own lunar companions.

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Later, the planet Uranus and the first asteroid, Ceres, were happened on by scientists looking for other things.

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Again, improved instrumentation led to the finds.

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Which Lang says is a common occurrence in the world of sky gazing.

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Gamma ray bursts--those energetic explosions that are thought to herald the death of massive, far-flung stars--were first seen by satellites looking for covert use of nuclear weapons.

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And Wilson and Penzias discovered the cosmic microwave background radiation, physical evidence for the Big Bang,

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while fiddling with an antenna designed to catch radio waves bouncing off satellites.

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For realizing what they were actually measuring, they got a Nobel Prize.

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As Yogi Berra, a star himself, once noted, "You can observe a lot just by watching."

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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