NASA’s Opportunity rover spent nearly 15 years exploring Mars, rewriting expectations for robotic space missions and uncovering evidence that the Red Planet may once have supported microbial life.

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 ...

On January 25, 2004, NASA's Opportunity rover landed on Mars! This was the second of NASA's twin Mars Exploration Rovers to land on the red planet. Its counterpart, the Spirit rover, arrived just ...

New evidence points to an era of water on the Meridiani Planum region of Mars more recent than already found, based on continuing scouting by NASA's "Opportunity" Mars Exploration Rover inside the ...

The Mars rover Opportunity, nearly starved of electrical power by a dust storm that has blocked sunlight for a month, is beginning to see positive solar array power margins. If the trend continues, it ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

NASA’s Mars Exploration Rover Opportunity used its panoramic camera to take the images combined into this mosaic view of the rover. The downward-looking view omits the mast on which the camera is ...