Lander (spacecraft) a landing which should have come on 25 December 2003 was not received. Indeed, no communication was ever established and "Beagle 2" was declared lost on 6 February 2004. The proposed 2009 British Beagle 3 lander mission to search for life, past or present was not adopted. The French/ESA NetLander mission for 2007 or 2009, with an orbiter and 4 landers, was cancelled because it was too expensive. Its successor, Mars MetNet, a multi-lander mission for 2011–2019 was not adopted by the ESA. The American Mars Exploration Rovers "Spirit" and "Opportunity" were launched in June and July 2003. They reached
Groundwater on Mars ridge if it was originally surrounded by much finer sediments, even if the sediments were not cemented. This effect has been invoked for channels in Saheki Crater. Places on Mars that contain layers in the bottoms of craters often also have inverted terrain. Spacecraft sent to Mars provided a wealth of evidence for groundwater being a major cause of many rock layers on the planet. The Opportunity Rover studied some areas with sophisticated instruments. Opportunity’s observations showed that groundwater repeatedly had risen to the surface. Evidence for water coming to the surface a number of times include hematite concretions (called