NASA's Mars Exploration Rover Opportunity has climbed out of the large crater that it had been examining from the inside since last September.
NASA's Mars Exploration rover Opportunity is heading back out to the Red Planet's surrounding plains nearly a year after descending into a large Martian crater to examine exposed ancient rock layers.
A small motor in the robotic arm of NASA's Mars Exploration Rover Opportunity that began stalling occasionally more than two years ago has become more troublesome recently.
Like salt used as a preservative, high concentrations of dissolved minerals in the wet, early-Mars environment known from discoveries by NASA's Opportunity rover may have thwarted any microbes from developing or surviving.
NASA's Mars Exploration Rover Opportunity has reached its science team's first destination for the rover inside Victoria Crater, information received from Mars late Tuesday confirms.
NASA's Mars Exploration Rover Opportunity finished the last step of a test in-and-out maneuver checking wheel slippage at the rim of Victoria Crater today.
Today, NASA's Mars Exploration Rover Opportunity entered Victoria Crater for the first time.
Two months after sky-darkening dust from severe storms nearly killed NASA's Mars exploration rovers, the solar powered robots are awake and ready to continue their mission.
After six weeks of hunkering down during raging dust storms that limited solar power, both of NASA's Mars Exploration Rovers, Spirit and Opportunity, have resumed driving.
Slight clearing of still-dusty Martian skies has improved the energy situation for both Spirit and Opportunity, allowing controllers to increase the rovers' science observations.
Rover engineers are growing increasingly concerned about the temperature of vital electronics on NASA's Mars Exploration Rover Opportunity while the rover stays nearly inactive due to a series of dust storms that has lasted for more than a month.
As of Thursday, July 26, NASA rovers Spirit and Opportunity are both enduring levels of reduced power supply.
Having explored Mars for three-and-a-half years in what were missions originally designed for three months, NASA's Mars rovers are facing perhaps their biggest challenge.
A giant dust storm brewing for more than a week on Mars has become worse and is affecting surface operations of the Mars Exploration Rovers, Spirit and Opportunity.
NASA's Mars Rover Spirit has found evidence of an ancient volcanic explosion. One strong clue is a bomb sag, which on Earth is found when a rock blown skyward by a volcanic explosion falls into soft deposits.
Some bright Martian soil containing lots of sulfur and a trace of water intrigues researchers who are studying information provided by NASA's Spirit rover.
NASA's durable Mars Exploration Rover Opportunity is the first robot to travel 10 kilometers on Mars. It reached that total (6.2 miles) during a drive on Feb. 6, seen above.
NASA's twin Mars rovers, nearing the third anniversary of their landings, are getting smarter as they get older.
Layers on Mars are yielding history lessons revealed by instruments flying overhead and rolling across the surface.