Lakes on Mars Mons (previously informally named "Mount Sharp" to pay tribute to geologist Robert P. Sharp) rising higher from the crater floor than Mount Rainier rises above Seattle. Strong evidence uggests that Gale Crater once held a large lake. On August 6, 2012, the Mars Science Laboratory landed on Aeolis Palus near Aeolis Mons in Gale Crater. On August 5, 2012, the Mars Science Laboratory rover, ""Curiosity", landed at the foot of a layered mountain inside Gale crater. As the mission progressed, discoveries and conclusions were released from NASA detailing the mounting evidence that Gale once contained a large lake. On September
Crewed Mars rover called MOLAB. One of the ideas for Molab was for it touch down on its wheels, what was called a "rover first" concept. MOLAB had a pressurized cylinder for crews to operate in a shirt-sleeve environment even on an extraterrestrial surface. For options for keeping track of location as the rover moves around Mars include: Navigation on Mars is noted as important issue for human missions to the planet. Celestial navigation, used for over 500 years on Earth, may provide a way of locating on the Mars surface to within about 100 meters (109 yards). Navigation is especially relevant to