Mars, methane, and mysteries
Mars, methane, and mysteries
10 August 2009
Mars may not be as dormant as scientists once thought. The 2004 discovery of methane means that either there is life on Mars, or that volcanic activity continues to generate heat below the martian surface. ESA plans to find out which it is. Either outcome is big news for a planet once thought to be biologically and geologically inactive.
http://www.esa.int/esaCP/SEMB9OE3GXF_index_0.html