The Opportunity to Rove on Mars! đ´
Today, weâre expressing gratitude for the opportunity to rove on Mars (#ThanksOppy) as we mark the completion of a successful mission that exceeded our expectations. Â
Our Opportunity Roverâs last communication with Earth was received on June 10, 2018, as a planet-wide dust storm blanketed the solar-powered roverâs location on the western rim of Perseverance Valley, eventually blocking out so much sunlight that the rover could no longer charge its batteries. Although the skies over Perseverance cleared, the rover did not respond to a final communication attempt on Feb. 12, 2019.
As the roverâs mission comes to an end, here are a few things to know about its opportunity to explore the Red Planet.
90 days turned into 15 years!
Opportunity launched on July 7, 2003 and landed on Mars on Jan. 24, 2004 for a planned mission of 90 Martian days, which is equivalent to 92.4 Earth days. While we did not expect the golf-cart-sized rover to survive through a Martian winter, Opportunity defied all odds as a 90-day mission turned into 15 years!
The Opportunity caught its own silhouette in this late-afternoon image taken in March 2014 by the roverâs rear hazard avoidance camera. This camera is mounted low on the rover and has a wide-angle lens.
Opportunity Set  Out-Of-This-World Records
Opportunityâs achievements, including confirmation water once flowed on Mars. Opportunity was, by far, the longest-lasting lander on Mars. Besides endurance, the six-wheeled rover set a roaming record of 28 miles.
This chart illustrates comparisons among the distances driven by various wheeled vehicles on the surface of Earthâs moon and Mars. Opportunity holds the off-Earth roving distance record after accruing 28.06 miles (45.16 kilometers) of driving on Mars.
Itâs Just Like Having a Geologist on Mars
Opportunity was created to be the mechanical equivalent of a geologist walking from place to place on the Red Planet. Its mast-mounted cameras are 5 feet high and provided 360-degree two-eyed, human-like views of the terrain. The robotic arm moved like a human arm with an elbow and wrist, and can place instruments directly up against rock and soil targets of interest. The mechanical âhandâ of the arm holds a microscopic camera that served the same purpose as a geologistâs handheld magnifying lens.
Thereâs Lots to See on Mars
After an airbag-protected landing craft settled onto the Red Planetâs surface and opened, Opportunity rolled out to take panoramic images. These images gave scientists the information they need to select promising geological targets that tell part of the story of water in Marsâ past. Since landing in 2004, Opportunity has captured more than 200,000 images. Take a look in this photo gallery.
From its perch high on a ridge, the Opportunity rover recorded this image on March 31, 2016 of a Martian dust devil twisting through the valley below. The view looks back at the roverâs tracks leading up the north-facing slope of âKnudsen Ridge,â which forms part of the southern edge of âMarathon Valley
There Was Once Water on Mars?!
Among the missionâs scientific goals was to search for and characterize a wide range of rocks and soils for clues to past water activity on Mars. In its time on the Red Planet, Opportunity discovered small spheres of the mineral hematite, which typically forms in water. In addition to these spheres that a scientist nicknamed âblueberries,â the rover also found signs of liquid water flowing across the surface in the past: brightly colored veins of the mineral gypsum in rocks, for instance, which indicated water flowing through underground fractures.
The small spheres on the Martian surface in this close-up image are near Fram Crater, visited by the Opportunity rover in April 2004.
For more about Opportunityâs adventures and discoveries, see: https://go.nasa.gov/ThanksOppy.
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