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[i]Looking somewhat like an extraterrestrial version of a 1960s slide projector, Mars 2020's bit carousel is home to nine drill bits that facilitate sample acquisition and surface analysis: two for abrading, one for regolith (rock and soil) and six for coring. The coring and regolith bits are used to place Martian samples in a clean sample collection tube, while the abrader bit is used to scrape the top layers of rocks to expose un-weathered surfaces for study.[/i]
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