It looks like it's back to the drawing board for scientists trying to solve a decades-old lunar mystery.
Some Apollo astronauts orbiting the moon in the 1960s and 70s saw a glow along the horizon just before sunrise, leading scientists to hypothesize that the glow was created by dust lofted above the moon's surface by impacts with space debris, including small pieces of comets.
But new data gathered by NASA's Lunar Atmosphere and Dust Environment Explorer mission, which was designed to help solve this lunar mystery, confirms the dust cloud, but still leaves the glow unexplained, according to a new study published in the journal Nature on Wednesday.
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