Opportunity report, Sol 4481, by A.J.S. Rayl, The Planetary Society

20160904_2GroovinonaSundayafternoonSol4464B-081416-FalsePCSeptember 5, 2016: Opportunity Gets in the Groove, Wraps Science Marathon Valley: Opportunity got in the groove at Endeavour Crater in August finishing the last of her science assignments in Marathon Valley, the Mars Exploration Rovers (MER) team prepared for departure, keen and so ready to drive into its tenth mission extension, and all was right with the world on the Red Planet.

“We have a few more things we need to knock off, but we’re on our way out of Marathon Valley right now,” said Steve Squyres, MER principal investigator, of Cornell University, at month’s end. “Of course, there’s always the what-if-something-surprising pops up,” he added.

Of course. That’s because MER is science driven. Opportunity was to finish taking the dozens of frames needed for an extensive color mosaic of Gibraltar_II, the most eastern segment of the Marathon Valley’s north wall the mission will visit, then tie up a few loose science ends, and rover on. But as the veteran robot field geologist was nearing completion of her work at the north wall, one of those what-if’s popped up.

“We’ve had this desire for a while now to not dawdle any longer in Marathon Valley, because of the exciting things that appear to be ahead of us, and so we kept trying to get on with it,” said Matt Golombek, MER project scientist, of the Jet Propulsion Laboratory (JPL), home to all NASA’s Mars rovers. “And then we found these interesting things and it delayed us.” [More at link]

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