The Mars Opportunity rover's 15-year mission: To boldly go into Martian craters everywhere. But now that it's over, where does it rank in the grand scheme of unmanned space exploration? From the ...

NASA has explored Mars through the use of unmanned orbiters, rovers and satellites since the 1960s. In fact, scientists at NASA are currently working to transport samples from the red planet back ...

NASA's Curiosity rover, or Mars Science Laboratory, could last on the surface of the Red Planet for five or six years, depending on the health of its onboard mechanisms and power system.

There are currently a record seven active unmanned missions operating on or around Mars, but the parade has only just begun. The next few years will be very busy indeed as a new series of ...

Unmanned spacecraft have been exploring and photographing Mars for decades. But no one's ever discovered clear signs of life there, or anywhere else in the universe.

What are the best methods to explore Valles Marineris on Mars, which is the largest canyon in the solar system? This is what a recent study presented at the 56th Lunar and Planetary Science ...

Given the hostile conditions of extraterrestrial environments, unmanned rovers play a critical role in the exploration of planets and moons. NASA's Mars and lunar exploration rovers have ...

The Perseverance rover captured this selfie on July 23 with a rock formation nicknamed "Cheyava Falls." NASA/JPL-Caltech/MSSS NASA’s Perseverance and Curiosity rovers have been roaming Mars for ...

As fun as it would be to visit Mars, we wouldn't necessarily want to walk a mile in the Curiosity rover's shoes — or rather, its wheels. After landing in Mars' Gale Crater in 2012 and traveling ...

NASA's Mars Exploration Rover (MER) Mission is an unmanned Mars exploration mission that sent two robotic rovers Spirit and Opportunity to explore the Martian surface and geology.

The first robot landed on Mars in 1997, and those little guys have left a legacy of hidden messages, lucky pennies, and supposed last words.

On a quiet day the Curiosity rover captured the view around it using its forward and rear cameras, showing the progression of a Martian day.