Osiris

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This Aug. 11, 2020 photo shows the sampling arm of the OSIRIS-REx spacecraft during a rehearsal for an approach to the "Nightingale" sample site on the surface of the asteroid Bennu. After almost two years circling the ancient asteroid, OSIRIS-REx will attempt to descend to the treacherous, boulder-packed surface and snatch a handful of rubble on Tuesday, Oct. 20, 2020. (NASA/Goddard/University of Arizona via AP)