Mars methane discovery: What does it mean?

Just a week after announcing that bodies of liquid water could have persisted on Mars long enough to sustain microbial life, NASA's Curiosity Mars rover team say they have detected signs of organic compounds in its rocks and methane in its air. 

A famous selfie of Curiosity in Gale Crater where it has discovered organic material and sniffed methane in the air.

Sen—Scientists with NASA"s Mars rover Curiosity team delivered a double whammy of paradigm-shifting news on Tuesday with results of sister investigations showing that the planet most like Earth in the Solar System has organic compounds in its rocks and spikes of methane gas in its atmosphere.

Curiosity fulfilled the primary goal of its mission shortly after touching down inside Gale Crater, a 96-mile wide impact basin with a three-mile high mountain rising from the basin floor. The rover found that Mars was suitable for microbial life, with hydrogen, carbon, oxygen, nitrogen, sulphur and phosphorus in its rocks and low-acid water to stoke the chemical stew.

Last week, the team announced that Gale Crater was once Gale Lake, with a body of water that may have ebbed and flowed for millions or even tens of millions of years.

Now 2.5 years into the mission, scientists report one of their biggest surprises: a short-lived, 10-fold spike in the concentration of atmospheric methane around Gale Crater.

The discovery reopened what many had considered a closed chapter in the tantalizing but elusive findings of methane on Mars, a gas that on Earth is strongly tied to life. Ground-based telescopes and Mars orbiters have had several sightings of methane plumes in Mars" atmosphere dating back more than a decade, but the first eight months of air-sampling by Curiosity yielded nothing.

India"s ongoing Mars Orbiter Mission will attempt to map Mars" methane globally.

Curiosity will continue to monitor for methane spikes in Gale Crater, though scientists doubt concentrations will be rich enough for isotopic analysis that may shed light on whether the gas is biologically or geochemically produced.

The team stands a better chance of learning more about Mars" organic compounds, which were found in samples drilled out from an ancient mudstone called Cumberland before Curiosity began its year-long trek to the base of Mount Sharp.

The organics could have been delivered to Mars by meteorites or formed indigeneously, scientists said during a webcast press conference Tuesday at the American Geophysical Union meeting in San Francisco.

"The challenge now is to find other rocks on Mount Sharp that might have different and more extensive inventories of organic compounds,” lead researcher John Grotzinger, with the California Institute of Technology in Pasadena, said in a statement.

The methane results will be published this week in the journal Science. Publication about the organics detection is pending.

Related Links:

Sen guide to Mars

Most detailed map yet of Mars

Curiosity finds ancient lake on Mars

Original story from Sen. © 2014 Sen TV Limited. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. For more space news visit and follow @sen on Twitter.

You've read  of  free articles. Subscribe to continue.
Real news can be honest, hopeful, credible, constructive.
What is the Monitor difference? Tackling the tough headlines – with humanity. Listening to sources – with respect. Seeing the story that others are missing by reporting what so often gets overlooked: the values that connect us. That’s Monitor reporting – news that changes how you see the world.

Dear Reader,

About a year ago, I happened upon this statement about the Monitor in the Harvard Business Review – under the charming heading of “do things that don’t interest you”:

“Many things that end up” being meaningful, writes social scientist Joseph Grenny, “have come from conference workshops, articles, or online videos that began as a chore and ended with an insight. My work in Kenya, for example, was heavily influenced by a Christian Science Monitor article I had forced myself to read 10 years earlier. Sometimes, we call things ‘boring’ simply because they lie outside the box we are currently in.”

If you were to come up with a punchline to a joke about the Monitor, that would probably be it. We’re seen as being global, fair, insightful, and perhaps a bit too earnest. We’re the bran muffin of journalism.

But you know what? We change lives. And I’m going to argue that we change lives precisely because we force open that too-small box that most human beings think they live in.

The Monitor is a peculiar little publication that’s hard for the world to figure out. We’re run by a church, but we’re not only for church members and we’re not about converting people. We’re known as being fair even as the world becomes as polarized as at any time since the newspaper’s founding in 1908.

We have a mission beyond circulation, we want to bridge divides. We’re about kicking down the door of thought everywhere and saying, “You are bigger and more capable than you realize. And we can prove it.”

If you’re looking for bran muffin journalism, you can subscribe to the Monitor for $15. You’ll get the Monitor Weekly magazine, the Monitor Daily email, and unlimited access to

QR Code to Mars methane discovery: What does it mean?
Read this article in
QR Code to Subscription page
Start your subscription today