Latest Mars Reconnaissance Orbiter Stories
Scientists studying images from The University of Arizona-led High Resolution Imaging Experiment camera on NASA's Mars Reconnaissance Orbiter have discovered never-before-seen impact "megabreccia" and a possibly once-habitable ancient lake on Mars at a place called Holden crater.
A NASA spacecraft in orbit around Mars has taken the first ever image of active avalanches near the Red Planet's north pole. The image shows tan clouds billowing away from the foot of a towering slope, where ice and dust have just cascaded down.
Liquid water has not been found on the Martian surface within the last decade after all, according to new research.
Three Mars spacecraft are adjusting their orbits to be over the right place at the right time to listen to NASA's Phoenix Mars Lander as it enters the Martian atmosphere on May 25. The lander will use a robotic arm to put samples of soil and ice into laboratory instruments.
Mars has an ethereal, tenuous atmosphere at less than 1 percent the surface pressure of Earth, so scientists working on HiRISE, are challenged to explain the complex, wind-sculpted landforms they're now seeing in unprecedented detail.
Scrutiny by NASA's newest Mars orbiter is helping scientists learn the stories of some of the weirdest landscapes on Mars, as well as more familiar-looking parts of the Red Planet.
Hi Mom! Spirit, the dusty Mars rover twin with the bad leg, shows up in a photo taken by the University of Arizona's orbiting HiRISE camera as the rover heads for a safe winter refuge.
Scientists scouting potential landing sites for NASA's next Mars rover mission are using new data from a powerful mineral-mapping camera to narrow the site selection.
Less than a year since beginning the prime science phase of its mission, NASA's Mars Reconnaissance Orbiter has passed a mission-success milestone for the amount of data returned.
NASA's Mars Reconnaissance Orbiter is examining several features on Mars that address the role of water at different times in Martian history.
- an ornament or knob in the shape of a flower