​Rovers Big Discovery: Is There Evidence That Life Exists On Mars?

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November 26, 2012
Also: Curiosity Rover, Mars, NASA, Red Planet, Rovers Big Discovery

The Mars rover Curiosity was made to make big announcements for the history books, but one recent discovery could be the most important one, which NASA scientists say we have to wait a few weeks to reveal what it is.

There are several media reports about the new Red Planet find that was made by Curiosity’s Sample Analysis at Mars (SAM), the rover’s onboard chemistry lab. It is capable of identifying organic compounds — the carbon-containing building blocks of life as we know it. SAM apparently spotted something interesting in a soil sample, delivered by Curiosity’s huge robotic arm.

“This data is gonna be one for the history books,” Curiosity chief scientist John Grotzinger, of Caltech in Pasadena, told NPR. “It’s looking really good.”

Grotzinger said the rover team won’t be ready to announce just what SAM found for several weeks yet, NPR reported. The scientists want to check and double-check the results, to make sure they’re for real.

The $2.5 billion Curiosity rover landed inside Mars’ huge Gale Crater on Aug. 5, kicking off a two-year mission to determine if Mars has ever been capable of supporting microbial life.

The car-size robot carries 10 different instruments to aid in its quest, but SAM is the rover’s heart, taking up more than half of its science payload by weight.

In addition to analyzing soil samples, SAM also takes the measure of Red Planet air. Many scientists are keen to see if Curiosity detects any methane, which is produced by many lifeforms here on Earth. A SAM analysis of Curiosity’s first few sniffs found no definitive trace of the gas in the Martian atmosphere, but the rover will keep looking.

Curiosity began driving again after spending six weeks testing its soil-scooping gear at a site called “Rocknest.” The rover will soon try out its rock-boring drill for the first time on the Red Planet, scientists have said.