Why Is the Moon Covered in Rust?

via Smithsonian

According to a new paper published in the journal Science Advances, scientists from the University of Hawaiʻi at Manoa made the discovery after reviewing data collected from Chandrayaan-1’s Moon Mineralogy Mapper instrument (also known as M3), an instrument built by NASA’s Jet Propulsion Laboratory at California State University that was onboard during a Indian Space Research Organisation’s (ISRO) mission. University of Hawaiʻi geologist Shuai Li, the paper’s lead author, says he had been studying imagery captured during the mission and noticed spectra, or light being reflected off of the moon’s surface, present at the lunar poles, revealing that these areas are comprised of compositions that are different from other expanses of the moon.

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