The Curiosity rover conducted a first-of-its kind experiment on Mars, detecting organic molecules that have never been observed before on the red planet.

When NASA’s Perseverance rover dropped through the thin Martian atmosphere and settled into Jezero Crater, it did more than stick a precision landing. For the first time, a robot on another world arrived equipped to let humanity hear that alien place in ...

"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