Opportunity was one of two rovers sent to Mars in 2003 for a mission originally expected to last just three months. While Opportunity's sister craft, Spirit, stopped functioning in 2010, Opportunity is still going strong. It passed its 3,000th day on the planet last week.
This time-lapse video was compiled from photos from the International Space Station.
Safundžić is an 18-year-old from Croatia, according to his Vimeo page. The photography came from the Image Science & Analysis Laboratory at NASA Johnson Space Center.
The video has become a sensation on the Web.