What NASA rover is about to celebrate its 10th year of being on the surface of Mars?

The correct answer is Opportunity. Opportunity landed on Mars on January 25, 2004, as part of NASA's Mars Exploration Rover program, and it significantly exceeded its expected operational lifespan, functioning for nearly 15 years before communication was lost in June 2018. Celebrating its 10th anniversary on Mars would highlight the rover's outstanding contributions to our understanding of the Martian surface and climate during that decade.

Curiosity, which is often a point of confusion, landed on Mars in August 2012, while Spirit, the twin rover to Opportunity, operated from January 2004 until communication was lost in 2010. Perseverance is a newer rover that landed on February 18, 2021, and would not be approaching a 10-year milestone for several more years. Therefore, Opportunity stands out as the rover that reached this significant anniversary in January 2014, making it the correct choice.