Object in Mars dirt not manmade?
A model displays high-fashion clothing during a fashion show in Cali, Colombia, on Thursday. — AP
Nasa’s Mars rover has swallowed its first scoopful of dirt from the Red Planet’s surface — and found some bright-colored objects that experts briefly thought might be manmade, the US space agency said.
In an update on Thursday on Curiosity’s two-and-a-half month old mission, Nasa said its Chemistry and Mineralogy (CheMin) instrument, deep in the car-sized rover’s belly, will analyse the soil to learn more about its make-up.
Some experts wondered if one of the bright-coloured objects — seen on a photo of a scoop hole in the Martian soil — could be manmade, like an object seen earlier this month thought to be plastic from the rover itself.
“We began to see some bright flecks in the scoop areas,” Curiosity’s project scientist told reporters in Pasadena, California, adding: “The science team started calling them schmutz.”
Some suggested they could be manmade, but following discussions between scientists and engineers, there was a “strong consensus” that they were indigenous to Mars.
This conclusion was backed by the fact that the objects were left visible at the bottom of holes left by the rover’s scoop, meaning they were normally underneath the planet’s surface.
“We can’t rule out that they’re something manmade but we don’t think that they are,” he said. Last week, Nasa determined that a bright object observed on the ground near the robot several days previously was a bit of plastic that may have dropped from the rover itself, and did not jeopardise the rover’s operations.
“The rover team’s assessment is that the bright object is something from the rover, not Martian material,” the mission said at the time.
“It appears to be a shred of plastic material, likely benign.”
But for the scientists, the first use of the CheMin device, to analyse the mineral make-up of the Red Planet’s soil — is a major milestone.
Curiosity is on a two-year, $2.5 billion mission to investigate whether it is possible to live on Mars and to learn whether conditions there might have been able to support life in the past. — AFP
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