Mud volcanoes on Mars
Mud volcanoes on Mars Researchers at the German Aerospace Center say laboratory experiments show that Mars may have “mud volcanoes”—locations where watery sediments seep onto the surface. Because of Mars’ low temperatures and pressures, the mud quickly freezes. Mars once had flowing water on its surface, and some of it still exists underground today. Learn more about why and how we explore Mars at NASA/JPL-Caltech/University of Arizona