An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

Perseverance rover discovered a rare rock known as Silver Mountain from Mars and it is 4.1 billion years old.

The intriguing chemistry of a rock collected by the Perseverance rover could trace to microbial activity—or not ...

The discovery of pale, loose rocks on the Martian surface could suggest that Mars was once a much warmer world.

Mars expert Roger Wiens and his team, including the rover Perseverance, discovered fascinating rocks incorporating kaolinite ...

NASA's Perseverance rover has spotted an oddball rock in an ancient river channel on Mars. Deputy project scientist Katie ...

A new study published in PNAS today has made quite a splash. The study involved a team of Chinese and American scientists led by Jianhui Li from Guangzhou University in China, and was based on work ...

Mars’s signature red hue may not be due to hematite, as previously believed, but rather to ferrihydrite — an iron oxide that requires water to form. Using a combination of spacecraft data and ...

The rock, which was part of a larger meteorite discovery back in 1999, is thought to have originated on Mars. A chunk of the planet is believed to have been blown off into space by an impact ...

A Chinese rover has spotted evidence of an ancient coastline on Mars, suggesting the Red Planet was once a blue world ... some judgements about what the rocks were made of, it would be impossible ...

Sometimes scientists must dig and work and sweat to make scientific discoveries. And sometimes a robot rolls over a rock that ...