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1 .This is Scientific American's 60-Second Space. I'm Karen Hopkin. Got a minute?
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2 .It's sad but true: the moon is not made of cheese.
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3 .But it still holds some fascinating surprises.
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4 .Because a recent study finds that the moon harbors more water than was previously thought,
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5 .and that this lunar H2O appears to hail from the same source as the water on Earth.
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6 .That's according to work published online, in the journal Science Express.
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7 .The moon is thought to have formed by a violent collision between a spacefaring rocky body and the proto-planet Earth.
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8 .It was also assumed that the heat of this impact would have caused any water,
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9 .or its constituent elements, to boil off into space, leaving the baby moon high and dry.
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10 .But recent studies have found that samples of volcanic glass, brought back from the moon on the Apollo missions, contain as much water as magma found here on Earth.
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11 .Now, by examining the isotopic composition of that water, researchers have found that it matches that of meteorites, the likes of which also delivered Earth its first drink.
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12 .The simplest explanation is that our planet was all wet before the impact that gave rise to its satellite.
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13 .Next mystery to unravel: how did the moon manage to maintain that moisture?
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14 .Thanks for the minute, for Scientific American's 60-Second Space. I'm Karen Hopkin.
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