Mars' Missing Atmosphere Likely Lost in Space

The mystery of Mars' missing atmosphere is one big step closer to being solved. A previous hypothesis had suggested that a significant part of the carbon from Mars' atmosphere, which is dominated by carbon dioxide, could have been trapped within rocks via chemical processes. "The biggest carbonate deposit on Mars has, at most, twice as much carbon in it as the current Mars atmosphere," study co-author Bethany Ehlmann, of the California Institute of Technology (Caltech) and NASA's Jet Propulsion