Travel back to the early days of Mars exploration with Sojourer, Spirit, and Opportunity. Discover how these robotic pioneers ...

PASADENA, Calif. -- Despite three brief signals from the trailblazing Mars Spirit rover, NASA declared the spacecraft gravely crippled Friday with an undiagnosed problem that could take weeks to even ...

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 ...

November's Sky Above episode features a supermoon, meteor shower, and interstellar comet, with experts discussing these ...

A mudstone sample from Jezero Crater shows textures and minerals that on Earth often form through microbial activity. Scientists caution that nonbiological processes could also explain the features, ...

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 ...

Curiosity is ten-feet long and weighs 1984 pounds, which makes it twice as long and four times heavier than the Spirit and Opportunity rovers. It has a top speed of 300 feet per-hour, but is expected ...

After months of flawless operation, the Spirit rover began transmitting garbled data—an early warning that its onboard systems were deteriorating rapidly and NASA’s Mars strategy was under threat.

Although humanity is getting better at sending robotic probes out into the Solar System to explore the places no human can tread, we're still very much on a learning curve. The first extraterrestrial ...

After 15 years and a journey of over 140 million miles, NASA said Wednesday that the Cornell-led Opportunity Rover had reached its final resting place: a dusty, frigid valley on Mars. From its Jet ...