The Lunar Dust Detector, attached to the leftmost corner of this experiment package left by the Apollo 12 astronauts, made the first measurement of lunar dust accumulation. As the matchbox-sized device’s three solar panels became covered by dust, the voltage they produced dropped. When Neil Armstrong took humanity’s first otherworldly steps in 1969, he didn’t … Continue reading Rediscovered Apollo Data Measures How Fast Moon Dust Piles Up