In a groundbreaking development, NASA has released stunning 4K footage of Mars, offering the most detailed and lifelike view ...

Mars memorial. NASA’s Spirit and Opportunity rovers, by carrying small pieces of the wreckage, paid tribute to the victims of the September 11, 2001, attack on the twin towers of the World Trade ...

NASA's twin Mars rovers, Spirit and Opportunity, have been on the surface of Mars for more than eight years. (Image credit: NASA/JPL) This story was updated at 7:24 p.m. ET.

After six years of unprecedented exploration of the Red Planet, NASA's Mars Exploration Rover Spirit no longer will be a fully mobile robot. NASA has designated the once-roving scientific explorer ...

The Mars rover Spirit is putting down roots. After months of trying to wiggle the rover out of a sand trap on Mars, the NASA probe remains firmly entrenched in the soft soil inside a small crater ...

NASA provides the latest images from Mars taken by the Mars Rovers Spirit and Opportunity | View photos the Mars rovers took as Spirit and Opportunity explored the red planet.

NASA has ended operational planning activities for the Mars rover Spirit and transitioned the Mars Exploration Rover Project to a single-rover operation focused on Spirit's still-active twin ...

In 2004, NASA launched two exploration vehicles to the red planet: the Spirit and Opportunity rovers. These two Mars Exploration Rovers were originally designed for 90-day missions to image ...

The Mars rover Spirit is still operational, but NASA scientists will stop trying to free it from a sandtrap and focus on the rover's survival and ability to conduct experiments where it's stuck.

NASA rover Spirit 'revolutionized' how we see Mars ... “It’s impossible to think about Mars before the rovers — they’ve so revolutionized our understanding of this planet,” Callas said.

Next came the twin rovers, Spirit and Opportunity, which landed at separate sites on opposite sides of Mars in 2004. Both sites showed the promise of learning about water on Mars.

That’s what life is like for Curiosity, one of the robots with wheels that NASA calls rovers. Another rover, Opportunity, ended its mission Feb. 13, so Curiosity is now the only functioning one left ...