NASA's Perseverance rover has encountered another rock on Mars that has left scientists puzzled.

The molecules may be remnants of fatty acids, which form cell membranes in Earth’s organisms, though they might have formed ...

Earlier this year, the tiny rocket company that wants to grow up to be SpaceX someday told NASA that, if it's agreeable, ...

NASA's Curiosity rover made a compelling find on Mars ' irradiated surface.

Researchers caution that the molecules could be of abiotic or biological origin, and do not represent definitive proof of ...