New Clues Suggest Wet Era on Early Mars Was Global

PASADENA, Calif. -- Minerals in northern Mars craters seen by two orbiters suggest that a phase in Mars' early history with conditions favorable to life occurred globally, not just in the south.

Southern and northern Mars differ in many ways, so the extent to which they shared ancient environments has been open to question.



In recent years, the European Space Agency's Mars Express orbiter and NASA's Mars Reconnaissance Orbiter have found clay minerals that are signatures of a wet envi [...]

Full story at http://spacefellowship.com/news/art21083/new-clues-suggest-wet-era-on-early-mars-was-global.html