The latest selfie from NASA's Curiosity rover marks the "Marsiversary" of the robot's landing on Mars. By Earth's reckoning, that landing happened almost two years ago — 687 days, which equals one Martian year.
The six-wheeled, nuclear-powered rover has done a lot since its touchdown on Aug. 5, 2012, including studies that determined its stomping grounds were once potentially habitable for Earth-type organisms. But there's lots more to do, including a climb up the foothills of Mount Sharp, also known as Aeolis Mons.
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The rover was originally slated for a mission lasting just one Martian year, but the mission already has been extended for as long as its battered wheels can keep going.
Curiosity snaps its selfies by sticking out its robotic arm, turning the camera on the end of the arm toward itself and taking lots of pictures. The images are stitched together to create a mosaic — but because of the way they were taken, the robotic arm never appears in the picture.
This selfie shows a couple of the holes that Curiosity drilled in a rock nicknamed Windjana. For more of Curiosity's self-portraits, check out this wide-angle shot from April, and a couple of selfies from more than a year ago. More than an Earth year ago, that is.
First published June 23 2014, 3:56 PM
Alan Boyle is the science editor for NBC News Digital. He joined MSNBC.com at its inception in July 1996, and took on the science role in July 1997 with the landing of NASA's Mars Pathfinder probe. Boyle is responsible for coverage of science and space for NBCNews.com.
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Boyle joined NBCNews.com from the Seattle Post-Intelligencer, where he was the foreign desk editor from 1987 to 1996. Boyle has won awards for science journalism from numerous organizations, including the National Academies, the American Association for the Advancement of Science and the National Association of Science Writers. Boyle is the author of "The Case for Pluto: How a Little Planet Made a Big Difference." He lives in Bellevue, Wash.