Curiosity rover collects fourth scoop of Martian soil

NASA's Mars rover Curiosity shook a scoopful of dusty sand inside its sample-handling mechanism on Sol 75 (Oct. 21, 2012) as the third scrubbing of interior surfaces of the mechanism. The rover team is instructing the rover to deliver a sieved sample from this scoopful -- the mission's fourth -- onto Curiosity's observation tray on Oct. 22 and plans to analyze another sample from the same scoopful with the Chemistry and Mineralogy (CheMin) instrument this week.

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