Were NASA's Mars Rover Opportunity a human child, s/he would be a fourth grader in the USA. NASA posted a piece concerning Opportunity's 9th anniversary of landing on Mars. A photo, its caption, and excerpts from the posting are provided, below.

'Matijevic Hill' Panorama for Rover's Ninth Anniversary
As NASA's Mars Exploration Rover Opportunity neared the ninth anniversary of
its landing on Mars, the rover was working in the 'Matijevic Hill' area seen in
this view from Opportunity's panoramic camera (Pancam). Opportunity landed Jan.
24, 2004, PST (Jan. 25 UTC). The landing site was about 12 miles (19
kilometers), straight-line distance, or about 22 miles (35.5 kilometers)
driving-route distance, from this location on the western rim of Endeavour
Crater.
Matijevic Hill is an area within the "Cape York" segment of
Endeavour's rim where clay minerals have been detected from orbit. This view is
centered northwestward, toward the crest of Cape York. It extends more than 210
degrees from left to right. The field of view encompasses most of the terrain
traversed by Opportunity during a "walkabout" in October and November 2012 to
scout which features to spend time examining more intensely. Two of the features
investigated at Matijevic Hill are "Copper Cliff," the dark outcrop in the left
center of the image, and "Whitewater Lake," the bright outcrop on the far right.
Opportunity's Pancam took the component images for this mosaic during
the period from the mission's 3,137th Martian day, or sol, (Nov. 19, 2012)
through Sol 3150 (Dec. 3, 2012).
The image combines exposures taken
through Pancam filters centered on wavelengths of 753 nanometers
(near-infrared), 535 nanometers (green) and 432 nanometers (violet). The view is
presented in approximate true color. This "natural color" is the rover team's
best estimate of what the scene would look like if humans were there and able to
see it with their own eyes.
Image credit:
NASA/JPL-Caltech/Cornell/Arizona State Univ.
PASADENA, Calif. -- NASA's Mars Exploration Rover Opportunity, one of the twin rovers that bounced to airbag-cushioned safe landings on Mars nine years ago this week, is currently examining veined rocks on the rim of an ancient crater.
Opportunity has driven 22.03 miles (35.46 kilometers) since it landed in the Meridiani Planum region of Mars on Jan. 24, 2004, PST (Jan. 25, Universal Time). Its original assignment was to keep working for three months, drive about 2,000 feet (600 meters) and provide the tools for researchers to investigate whether the area's environment had ever been wet. It landed in a backyard-size bowl, Eagle Crater. During those first three months, it transmitted back to Earth evidence that water long ago soaked the ground and flowed across the surface.
....
Opportunity has operated on Mars 36 times longer than the three months planned
as its prime mission.
....
For more information about Opportunity, visit http://www.nasa.gov/rovers and http://marsrovers.jpl.nasa.gov . You can follow the project on Twitter and on Facebook at: http://twitter.com/MarsRovers and http://www.facebook.com/mars.rovers
Guy Webster 818-354-6278
Jet Propulsion Laboratory, Pasadena, Calif.
guy.webster@jpl.nasa.gov
2013-030
Well done, NASA and JPL teams!
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