how far has the opportunity rover traveled during its time on mars
Opportunity (rover) Opportunity, also known as MER-B (Mars Exploration Rover – B) or MER-1, is a robotic rover active on Mars since 2004.[1] Launched on July 7, 2003 as part of NASA's Mars Exploration Rover program, it landed in Meridiani Planum on January 25, 2004, three weeks after its twin Spirit (MER-A) touched down on the other side of the planet.[7] With a planned 90 sol duration of activity (slightly more than 90 earth days), Spirit functioned until getting stuck in 2009 and ceased communications in 2010, while Opportunity remains active as of August 26, 2018 or 5529 sols since landing, having exceeded its operating plan by 14 years, 122 days (in Earth time). Opportunity has continued to move, make scientific observations, and report back to Earth for over 55 times its designed lifespan. As of January 23, 2018, the rover had traveled 45.09 kilometers (28.02 miles).[6]