Humphrey on the Inside

The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter acquired this image of the Opportunity rover on the southwest rim of "Santa Maria" crater on New...

In this selfie, Spirit shows her solar panels gleaming in the Martian sunlight and carrying only a thin veneer of dust two years after the rover landed and began exploring the red planet.

The "Lion King" panorama was the largest panorama obtained by either rover in 2004.

Technicians maneuver the aeroshell for Mars Exploration Rover 2 onto a workstand in the Payload Hazardous Servicing Facility.

Women working in science, technology, engineering and mathematics at NASA's Jet Propulsion Laboratory pose for a photo in mission control in honor of Women in Science Day.

This false-color image highlights mysterious and sparkly dust-like material that is created when the soil in this region is disturbed.

NASA's Curiosity finds crystals, Opportunity celebrates her 5,000th day on Mars and the MarCO smallsats get solar arrays.

This 360-degree panorama was taken by "Dusty," a fully-working replica of NASA's Opportunity rover at the agency's Jet Propulsion Laboratory. The panorama was taken as part of a software test. Memb...

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 ...

This scene from NASA's Mars Exploration Rover Opportunity shows "Lunokhod 2 Crater," which lies south of "Solander Point" on the west rim of Endeavour Crater.

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.

This artist's concept animation depicts key events in NASA's Mars Exploration Rover mission, including launch; cruise; entry, descent & landing; egress; and, surface operations.

Opportunity used its panoramic camera (Pancam) to acquire this view of "Solander Poin." The southward-looking scene, presented in false color, shows Solander Point on the center horizon, "Botany Ba...

Mars Exploration Rover parachute deployment testing in the world's largest wind tunnel at NASA's Ames Research Center, Moffet Field, Calif.

Mars Exploration Rover parachute deployment testing

Spirit acquired this mosaic while investigating the area east of the elevated plateau known as "Home Plate" in the "Columbia Hills." The trench exposed a patch of nearly pure silica, with the comp...

NASA's Mars Exploration Rover Opportunity observed this outcrop on the "Murray Ridge" portion of the rim of Endeavour Crater as the rover approached the 10th anniversary of its landing on Mars.

Take JPL Education's Pi Day challenge featuring real-world questions about NASA spacecraft -- then tweet your answers to @NASAJPL_Edu using the hashtag #PiDay. Answers will be revealed on March 16.

Download a PDF of the 2013 - 2014 Mars Calendar.

This illustration depicts some highlights along the route as NASA's Mars Exploration Rover Opportunity drove as far as a marathon race during the first 11 years and two months after its January 200...

Donc, vous voulez étudier Mars avec un atterrisseur ou un rover, mais où l’envoyer exactement? Apprenez comment les scientifiques et ingénieurs abordent cette question dans cette vidéo de 60 second...

JPLers pounded the pavement in celebration of a Mars marathon milestone. Opportunity rover took 11 years and 2 months to clock 26.2 miles. The team's time was considerably less.

Textured rows on the ground in this portion of "Perseverance Valley" are under investigation by NASA's Mars Exploration Rover Opportunity, which used its Navigation Camera to take the component ima...

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...

From left: Dave Lavery, program executive for Solar System Exploration at NASA Headquarters, Dr. Ed Weiler, associate administrator, Office of Space Science, NASA Headquarters, Pete Theisinger, (fo...