Mystery methane on Mars: The saga continues
Friday, May 15, 2015 - 07:30
in Astronomy & Space
Is the Red Planet giving off methane? The question has taunted scientists for nearly 50 years, ever since the Mariner 7 spacecraft detected a whiff of the gas near Mars' south pole. Researchers retracted the finding a month later after realizing that the signal was in fact coming from carbon dioxide ice.