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.

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 ...

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

New detection method: Researchers found life organizes molecules in distinct statistical patterns, offering a new way to identify alien life without relying on Earth-specific chemistry. Fungus ...

NASA's Curiosity rover uncovered critical new samples, including a series of compounds planetary scientists consider building blocks for the origin of life on Earth ...

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

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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 ...