NASA's Curiosity rover explores a sulfate region in Mars' Gale Crater in August 2022, with upper Mount Sharp in the distance. Scientists say the discovery of siderite, a type of iron carbonate, could ...

Two of NASA's giants of cosmic discovery, including a rover that launched from Florida, have been named among Time's best ...

Billions of years ago, Mars was warm, wet, and capable of sustaining liquid water on its surface. Scientists have long believed the Red Planet once had a dense atmosphere rich in carbon dioxide (CO₂), ...

Time running out for savin' MAVEN as stricken spacecraft still silent as Mars solar conjunction nears NASA's MAVEN spacecraft ...

NASA's Mars rover Curiosity is transforming into a Martian shutterbug. Since its spectacular landing on Sunday (Aug. 5 PDT) , the car-size rover has beamed home swift views of its Gale Crater landing ...

NASA has captured an image of a coral-like rock on Mars estimated to be several billions of years old. The space agency's Curiosity Rover sent back images of a small, wind-eroded rock that resembles a ...

The Curiosity Mars rover photographed more rocks that are shaped like coral on the red planet's surface. Researchers said the rocks were evidence that at one point water was on Mars. The Curiosity ...

WASHINGTON — A mineral called siderite found abundantly in rock drilled by a NASA rover on the surface of Mars is providing fresh evidence of the planet's warmer and wetter ancient past when it ...

When the Perseverance rover arrived on Mars nearly five years ago, NASA officials thought the next American lander to take ...