Could there actually be life on Mars?

The mystery deepened as NASA’s Mars Curiosity rover recorded a big spike in methane over the last few months. Since methane, which can be produced by bacteria or microbes even in environments with little or no oxygen, is a sign of life, scientists are taking note of this latest finding from the Martian surface.

Since Curiosity has been working on the surface of Mars since August 2012 to help scientists figure out if life, even in microbial form, ever existed on the Red Planet, the latest data from the robotic rover is particularly interesting.

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