The rover is searching Yori Pass at the base of the Mars' Jezero Crater river basin for fine-grained sandstone that may have been carried by water. NASA's Perseverance rover has reached an area at ...

The distinctively fluted surface and elongated hills in this image in Medusae Fossae are caused by wind erosion of a soft fine-grained rock. Called yardangs, these features are aligned with the ...

"A beautiful site for collecting lucky rock core #13!" NASA tweeted on Tuesday. "Currently nerding out over this fine-grained sample, and aiming to get another like it from this area." The rover ...

Entombed in two slabs of fine-grained rock, a skeleton of a bird-like creature with a long tail caught my eye as soon as I entered the Sihetun Geology Museum in Beipiao City, about a one-hour ...

NASA’s Mars rover has come across fine-grained rocks on the Red Planet, which have the best chance at preserving evidence of life according to scientists. From earlier, distant views ...