It takes 687 days for Mars to orbit the Sun, which is why you didn't already see this headline roughly 300 odd days ago. Around two Earth years ago, the Curiosity rover touched down on the surface of Mars as not the first, but one of many probes sent to the red planet by NASA in search of evidence of water and knowledge.
Image Credit: NASA / JPL
Curiosity's Twitter account provides background for how the selfie was achieved
ABC News has more in-depth reporting on Curiosity's mission progress...
In addition to taking a self-portrait that trumped all selfies on Earth, the rover made a major discovery in finding an ancient riverbed in an area known as Yellowknife Bay.
Two mudstone slabs that the robot sampled with its drill revealed that the site once harbored mild water, the necessary elemental ingredients to support microbial life.
Curiosity Rover Report (6/24/2014): Curiosity Completes Its First Martian Year
On June 24, 2014, NASA's Curiosity rover completes her first Martian year (687 Earth days). Hear team members describe how the mission accomplished its main goal to find a past habitable environment on the Red Planet and the ongoing science studies.