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Follow the Methane! New NASA Strategy for Mars

The recent discovery of methane on Mars is more than a curiousity. It could be a game changer.

For the last three decades, NASA’s Mars exploration program has been based on a single mantra: Follow the water. Where there is water, there might be life. So far, this strategy has come up empty handed. But now, NASA might have to change course and follow the methane. Methane gas, which heats up our food in our kitchen stoves, can be created by natural processes, but about 90% of the earth’s methane gas comes from living things, such as the decomposition of organic materials. So this is tantalizing evidence that perhaps some form of Martian life created this methane.

Back in 2003, the European Mars Express orbiter detected methane on Mars in the northern hemisphere. Careful analysis over several years with three ground-based telescopes then detected plumes of methane gas spewing from several specific sites on Mars, peaking in the summer time. Up to 20,000 metric tons of methane gas have been detected in these plumes. The burning question now being asked is: what is the origin of this methane gas?

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