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Nation/World

October 6, 2012

Curiosity to scoop up Martian soil

LOS ANGELES — For the Mars Curiosity rover, it’s one “first-ever” after another.

The 1,982-pound explorer is now at a spot in Mars’ Gale Crater called Rocknest, ready to use its robotic scoop for soil samples. Scientists hope the samples will provide information crucial to the project’s central mission — determining whether there were conditions on the planet at some time that could have fostered life.

That’s microbial life, to be exact, but still — alien life. Four scoops of Martian dirt should be about right to provide new data to help solve this mystery.

“What makes Curiosity different from all other rovers is her ability to acquire samples of Mars soil and rock, and to analyze them in her onboard laboratories,” said Ashwin Vasavada in an interview yesterday morning with the Los Angeles Times.

“This is an exciting week for us,” said the deputy project scientist for the Curiosity mission, “since we’re just days away from doing just those things for the first time.”

Rocknest, says NASA, is a patch of windblown sand and dust, about 8 feet by 16 feet, a great site for scooping because the rover will be able to dig several times.

The first two scoops that the rover collects are just for cleaning out any last remnants of the home planet that might be clinging to the scoop.

“We’ve found a nice, thick pile of typical Mars sand,” Vasavada said, “chosen because of its familiar properties and its ability to clean out the hardware. Even in our cleanest assembly buildings, it was not possible to keep minute amounts of oils and other chemicals off of Curiosity. The sand and some vigorous shaking should remove the last bits of Earth from the tools and get them ready to study Mars like we’ve never studied it before.”

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