Exotically pitted “Swiss-cheese” terrain made of carbon dioxide (dry ice) overlies the topmost layer of water ice in Mars’ South Polar Massive Carbon Dioxide Ice Deposit. Image is about 1 kilometer ...

A remarkable discovery on Mars has provided one of the clearest timelines yet for the existence of an ancient ocean on the ...

A former chief historian of NASA reflects on the history and future of Mars exploration Roger D. Launius The original 'Face on Mars' image taken by NASA's Viking 1 orbiter that resembled a human face ...

BLOOMINGTON, Ind. — Epsom-like salts believed to be common on Mars may be a major source of water there, say geologists at Indiana University Bloomington and Los Alamos National Laboratory. In their ...

Mars holds a special place in the solar system. It represents marginal habitability. This means it transitioned from warm and ...

A mosaic of two pictures showing the rover arm after scanning and sampling one of the rocks discussed in the paper. The rock itself is in the lower right and clearly shows the hole where the sample ...

"Even the largest floods we modeled couldn't reach far enough to explain all the rootless cones we see." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

A routine pass behind Mars marked the end of an era for one of NASA’s most important space missions. After more than a decade ...