Mars rover fails to find methane

Mars rover fails to find methane

Lack of gas in atmosphere argues against presence of life on Red Planet

By Erin Wayman, 12:56 PM September 25, 2013

NASA’s Curiosity rover has come up empty-handed in its search for methane in the atmosphere of Mars, researchers report September 19 in Science.

During eight months of data collection, the rover detected average methane concentrations of 0.18 parts per billion. The researchers say that, because of the measurement’s margin of error, the finding translates to essentially no methane in the Martian atmosphere. 

“It’s disappointing because [methane] is a potential sign of biological activity,” says ...

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