NASA’s Opportunity rover was designed for a 90-day mission, but it ended up exploring Mars for 15 years. During that time it ...

This year, NASA’s scientific rover Opportunity celebrated a milestone. It has been exploring Mars for ten years, even though it was only supposed to operate for three months. John Callas is the ...

The golf cart-size rover was designed to last only three months, but proved itself to be an unexpected endurance athlete. It traveled more than the distance of a marathon when less than half a mile ...

NASA's Opportunity Mars rover was built to operate for just 90 days, but kept going for 15 years. NASA officially declared it dead on Wednesday, and its last message to scientists before it went dark ...

NASA has sent five robotic vehicles to Mars. Sojourner, Spirit, Opportunity, Curiosity, and Perseverance. Look back at the missions. (NASA/AFP via Getty Images) Martian mudstones contain features that ...

NASA’s Opportunity rover began its 15th year on Mars this week, although the intrepid robotic explorer may already be dead. “I haven’t given up yet,” said Steven W. Squyres, principal investigator for ...

NASA's Opportunity rover on Mars did not return a call from Earth yesterday (June 12) while enduring a massive dust storm that scientists have called "one of the most intense ever observed." "The ...

HOUSTON -- The odometer of NASA's Mars rover Opportunity has hit 25.01 miles, breaking the record for off-Earth distance traveled. NASA officials said Monday that Opportunity drove 157 feet over the ...