Humphrey on the Inside

This stereo panorama shows the view NASA's Mars Exploration Rover Opportunity gained from the top of the "Cape Tribulation" segment of the rim of Endeavour Crater. The rover reached this point thre...

NASA discussed the status of its Mars Exploration Rover (MER) Opportunity in a media briefing at 11 a.m. PST (2 p.m. EST) Wednesday, Feb. 13, from the agency’s Jet Propulsion Laboratory (JPL) in Pa...

NASA's Mars Exploration Rover Opportunity used its navigation camera to capture the component images for this stereo, 360-degree panorama near the ridgeline of Endeavour Crater's western rim. The v...

This June 2017 view from the Pancam on NASA's Opportunity Mars rover shows the area just above "Perseverance Valley" on the western rim of Endeavour Crater. Color has been enhanced to make diffe...

This image shows rocky debris and dust, which planetary scientists call "regolith" or "soil," that has been churned up by the rover wheels.

This image from the Mars Exploration Rover Spirit's rear hazard identification camera shows the rover's hind view of the lander platform, its nest for the past 12 sols, or martian days. The rover i...

Download a PDF of the 2013 - 2014 Mars Calendar.

This blink comparison aids evaluation of a drive by NASA's Mars Exploration Rover Spirit during the rover's 2,099th Martian day, or sol (Nov. 28, 2009).

NASA's twin robot geologists, the Mars Exploration Rovers, will launch toward Mars in 2003 in search of answers about the history of water on Mars. The rovers will be targeted to sites that appear ...

Entry, descent and landing manager, Rob Manning (facing camera), hugs Richard Cook, the current Mars Exploration Rover project manager after Opportunity's successful landing at Meridiani Planum, Mars.

NASA Associate Administrator for Science Thomas Zurbuchen addressed the Opportunity rover team inside Mission Control at NASA’s Jet Propulsion Laboratory in Pasadena, California, a few hours before...

This view of a 90-foot-wide, relatively fresh crater on Mars, "Orion Crater," combines images from the left eye and right eye of the Panoramic Camera (Pancam) on NASA's Mars Exploration Rover Oppor...

Details of the Gusev Crater designated landing site are added with topographic information and higher-resolution imaging from instruments on the Mars Global Surveyor and Mars Odyssey orbiters.

This May 29, 2016, image of a target called "Private Joseph Field" combines images from the microscopic imager on NASA's Mars Exploration Rover Opportunity with enhanced color information from the ...

The component images for this 360-degree panorama were taken by the navigation camera on NASA's Mars Exploration Rover Opportunity after the rover drove about 97 feet (29.5 meters) during the missi...

NASA'S Mars Exploration Rover Spirit captured this westward view from atop a low plateau where Sprit spent the closing months of 2007.

A crowd of excited men and women who work on the Mars Exploration Rover mission are wearing white paper 3-D glasses with red and blue lenses to view some of the Spirit rover's first three-dimension...

NASA's Mars Exploration Rover Opportunity used its navigation camera (Navcam) to record this image of the northern end of "Solander Point," a raised section of the western rim of Endeavour Crater.

Some of the team members from NASA's Mars Exploration Rover project were still in college -- or even high school -- when the rovers landed in 2004. Hear their stories of becoming part of this remar...

This June 2017 view from the Pancam on NASA's Opportunity Mars rover shows the area just above "Perseverance Valley" on a large crater's rim. A broad notch in the crest of the rim, at right, mig...

Opportunity captured this view of "Burns Cliff" after driving right to the base of this southeastern portion of the inner wall of "Endurance Crater."

This infographic highlights NASA’s twin robot geologists, the Mars Exploration Rovers (MER) Spirit and Opportunity.  The rovers landed on the Red Planet in 2004, in search of answers about the hist...

This image from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Opportunity shows where a rock called "Pinnacle Island" had been before it appeared in front of the rover in early Jan...

Download a zip file of the Opportunity Rover: Block Island Meteorite 3D Model.

While driving eastward toward the northwestern flank of "McCool Hill," Spirit's wheels churned up the largest amount of bright soil discovered to that point in the mission. This image from Spirit's...