No Methane Found on Mars

    Published: 06-16-2009
    Views: 11,226
    Test performed by NASA’s Curiosity instruments returned no evidence of methane, but scientists say there might still be a possibility for life on the Red Planet.

    New evidence from Curiosity reveals that Mars actually lacks methane, contradicting earlier reports.  Methane can be a key sign of life because it is a byproduct of microbial metabolism.  But scientists say life on Mars isn’t completely out of the question.   There are even some terrestrial microbes that don’t produce methane as a byproduct of metabolism.   The rover is still going to keep searching for methane but in much lower concentrations, well under 1 part per billion—less than 1/6 of what earlier studies predicted.