Through Nov. 1, K-12 students in the U.S. are encouraged to enter an essay contest to name NASA's next Mars rover.

The rover recently drilled two samples, and both showed the highest levels of clay ever found during the mission.

For the first time, NASA's Mars Odyssey orbiter has caught the Martian moon Phobos during a full moon phase. Each color in this new image represents a temperature range detected by Odyssey's infrared camera.

Nominees include four JPL projects: the solar system and climate websites, InSight social media, and a 360-degree Earth video. Public voting closes April 18, 2019.

NASA's Opportunity Mars rover mission is complete after 15 years on Mars. Opportunity's record-breaking exploration laid the groundwork for future missions to the Red Planet.

In deploying its first instrument onto the surface of Mars, the lander completes a major mission milestone.