"The results reported here can be crucial when down-selecting which samples, if not all, are returned to Earth." ...

A lookout point in the foothills of Mount Sharp, a 3-mile-high mountain, allowed the rover to see all the way across Gale Crater 's floor. Near the center of the image is Peace Vallis, an ancient ...

Jezero Crater’s rocks reveal three stages of water activity, shifting from hostile acidic fluids to more life-friendly ...

A planetary scientist walks through the sensors and systems that went into the recent detection of potential biosignatures.

Planetary geologists reply that these impressions usually result from pareidolia, the tendency for the brain to see familiar shapes in random patterns, a tendency Carl Sagan long ago called an ...

Earlier evidence pointing to ancient microbial life on the red planet hasn’t held up.

Scientists believe intriguing leopard spots on a rock sampled by the Perseverance rover on Mars may have potentially been ...

NASA’s Perseverance rover has delivered its most compelling clue yet in the search for life on Mars. A rock sample called ...

The barren red deserts of Mars might not be as lifeless as they seem. A growing number of researchers are pointing to strange ...

While Mars today only has a wispy remnant of an atmosphere, it may once have had one hundreds of times thicker with a ...

Viking consisted of two twin orbiters and landers, with experimental chambers in the landers to conduct three biology ...

Over four years since it landed on Mars, NASA's Perseverance Rover might have made serious headway in its mission to find signs of ancient microbial life on the planet.