A chance observation by NASA’s Curiosity rover has uncovered the first direct physical evidence of an ancient Martian ...

The search for life on Mars involves the efforts of scientists from many different disciplines. An important aspect of that ...

These findings suggest that the absence of past detections does not mean discovery is imminent. If extraterrestrial ...

The “alien” is actually a potato. Specifically, it is a purple tuber nicknamed Spudnik-1, grown and photographed by Pettit.

"Nickel-rich iron-sulfide is observed on Earth in ancient sedimentary rocks. Iron sulfide weathers easily in oxygen-rich ...