Scientists edge closer to answering Mars’ biggest question: Did life ever exist on the red planet? Here's the latest from two new finds.

"This experiment's never been run before on another world," said Amy Williams, an astrobiologist working on the Curiosity mission.

For decades, the search for life beyond Earth has revolved around a key question: What molecules should scientists be looking ...

The organic molecules discovered by NASA’s Curiosity rover could have been formed by life, but they could have also come from geologic processes or meteorites ...

Curiosity has detected a surprising variety of organic molecules on Mars, including compounds tied to the chemistry of life.

NASA’s Curiosity rover has uncovered an astonishing discovery on Mars, vast, spiderweb-like formations that suggest the Red ...

Recently, NASA revealed exciting details of new findings from Mars. Scientists have discovered tiny patterns of unusual minerals in the clay-rich rocks on the edge of Jezero Crater—an ancient lake ...

Organic compounds found in a Martian crater contain building blocks of life, according to a new study.

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Life on Mars sounds like something from a "Doctor Who" episode. But a study published in the International Journal of Astrobiology challenges the science fiction notion of that idea. The research ...

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 ...