Mars Reconnaissance Orbiter Homepage

Seasons change even on Mars and NASA's fleet of explorers are helping scientists learn more about the effects on the Red Planet. WATCH VIDEO

Scientists found evidence that a region of northern Mars called Arabia Terra experienced thousands of "super eruptions," the biggest volcanic eruptions known, over a 500-million-year period. READ MORE

Three studies published in the past month have cast doubt on the premise of subsurface lakes below the Martian south pole. READ MORE