Big Splash: How Water on the Moon Was Found

Water on the moon? If you had asked almost any space scientist about it after Apollo 11, you would have gotten nowhere. The moon was dry as dust -- even more so -- they would have told you. For sure, the moon was probably pummeled with comets -- which are largely ice -- billions of years ago, when the solar system was young and filled with debris. But on an airless world, baked by the sun, any water would probably have vaporized and escaped into space. "It was a question we thought we...Full Story
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