This image of the moon's north pole is a composite of 983 photographs taken by NASA's Lunar Reconnaissance Orbiter Camera (LROC) over a nine-month period. The pictures were taken at the time of year when this region of the moon is best-lit, and areas in not receiving light may be permanently shadowed.
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Rebecca J. Rosen is a senior editor at The Atlantic, where she oversees the Family and Education sections.