The device counts neutrons that cosmic rays have knocked out of atoms on the moon's surface.
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Cosmic rays from a supernova would have scorched the moon, leaving signs of damage in surface minerals that could be visible to microscopes.
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However, when the moon is between the telescope and the source of the cosmic rays, Dr Colin and his colleagues reckon that it will be possible to separate the two by looking at the edges of the shadows.
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's Ban Ki-moon, standing in a damaged UNRWA warehouse, backlit by what appear to be rays of the sun, during his visit in January to Gaza.
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