6th Year Anniversary Graphic

A self-portrait of NASA's Mars Exploration Rover Opportunity taken by the rover's panoramic camera (Pancam) in late March 2014 shows effects of recent winds removing much of the dust from the rover...

This cylindrical-projection view was created from navigation camera images that NASA's Mars Exploration Rover Spirit acquired on sol 122 (May 7, 2004).

This image from Opportunity's panoramic camera features the remains of the heat shield that protected the rover from temperatures of up to 2,000 degrees Fahrenheit as it made its way through the ma...

Chile's Atacama Desert is the driest place on Earth -- and a ready analog for Mars' rugged, arid terrain.

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...

The Perseverance rover holds many promises: to look for evidence of life on Mars, to collect rock samples meant to be sent to Earth one day, and to test technology that could be used in a future hu...

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 grouping of two test rovers and a flight spare provides a graphic comparison of three generations of Mars rovers developed at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The setting is ...

In February 2015, NASA's Mars Exploration Rover Opportunity is approaching a cumulative driving distance on Mars equal to the length of a marathon race. This map shows the rover's position relative...

This view taken by Spirit show's the "Columbia Hills" up ahead.

Late on Feb. 12, 2019, mission controllers at NASA’s Jet Propulsion Laboratory in Pasadena, California, sent the last commands to ask NASA’s Opportunity rover on Mars to call home. 

Wheel tracks from NASA's Mars rover Opportunity descending and departing the "Cape Tribulation" segment of Endeavour Crater's rim are visible in this April 21, 2017, view from the rover's Panoramic...

Divide and conquer: combining 11 small sections of "Block Island" (the color map shows five of the sections).

This is one of the first images beamed back to Earth shortly after the Mars Exploration Rover Spirit landed on the red planet.

John Callas has been a leader of NASA's Mars Exploration Rover Project since the project's inception in 2000, and has been the project manager since 2006.

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.

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.

Download a PDF of the 2015 - 2016 Mars Calendar.

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

The rock abrasion tool on NASA's Mars Exploration Rover Spirit ground two holes in a relatively soft rock called "Wooly Patch" near the base of the "Columbia Hills" inside Gusev Crater on Mars.

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

This stereo view from NASA's Mars Exploration Rover Opportunity shows contrasting textures and tones of "Hinners Point," at the northern edge of "Marathon Valley," and brighter outcrop on the valle...

In the Payload Hazardous Servicing Facility, technicians remove one of the circuit boards on the Mars Exploration Rover 2 (MER-2).

On May 19th, 2005, NASA's Mars Exploration Rover Spirit captured this stunning view as the Sun sank below the rim of Gusev crater on Mars.

"Perseverance Valley" lies just on the other side of the dip in the crater rim visible in this view from the Navigation Camera (Navcam) on NASA's long-lived Mars Exploration Rover Opportunity, whic...