The surface of Mars is extremely cold, irradiated, and desiccated. But at one time, the planet was much warmer and wetter, ...

Visit ancient Mars—a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to ...

NASA's Perseverance rover on Mars has discovered unusual "float" rocks on the rim of Jezero Crater while searching for signs ...

Through its "Moon to Mars" program, NASA plans to send the first crewed missions to Mars by the end of the next decade. To ...

A NASA rover taking rock samples on Mars has uncovered a plentiful mineral that was invisible to orbiters studying the Red ...

“The discovery of abundant siderite in Gale Crater represents both a surprising and important breakthrough in our ...

Scientists have pondered why Mars seemed to be missing sufficient carbonates indicative of its warm, wet past. Now, NASA’s ...

In those drill sites, Curiosity detected deposits containing an iron carbonate material called siderite. According to Ben ...

NASA’s Curiosity rover has uncovered a missing piece in the puzzle of Mars' past atmosphere. Scientists discovered ...

Mars may once have had a relatively warm and wet climate conducive to flowing water, rain and snow, producing a terrain much ...

On April 20, the sun will square Mars, bringing two powerhouse energies together that are anything but subtle. Discover what ...

A new study from geologists at the University of Colorado Boulder paints this picture of a Red Planet that was relatively ...