Mr. Price

discoverynews:

Mars Rover Opportunity Finds ‘Rich’ Clay Deposits: “A new study looks at chemicals spotted by a Mars-orbiting spacecraft to conclude that Endeavour Crater, which Opportunity reached in August 2011 after a 1,000-plus day, 13-mile trek across the plains of Meridian, is flush with a variety of clays, which on Earth, form in the presence of water.”