The Moon’s surface is rusting — and Earth may be to blame

Dust on the Moon discovered by the Chandrayaan-1 spacecraft orbiting our planetary companion suggests complex interactions between the Sun, Earth, and Moon. With little water or oxygen, iron oxide (rust) still formed in the harsh environment of the lunar surface, detected within hematite deposits recorded by the lunar orbiter more than a decade ago. Hematite is created on Earth from the interactions of oxygen and water on iron deposits. However, with water in short supply on the Moon (except inside craters at the poles) and a scarcity of oxygen, researchers are puzzled how the mineral may have formed. The Moon…

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