Space exploration took a giant leap forward 10 years ago when the rover Opportunity landed on Mars. On Jan. 24, 2004, the rover Opportunity joined Spirit for what some thought would only be a few months.

Ten years later, Opportunity is still providing crucial information about the Red Planet. According to TheDay, Opportunity has some wear and tear, including a broken wheel and two instruments which stopped working long ago. Despite these issues, it’s still accomplishing more than scientist expected.

Opportunity’s twin, Spirit, stopped communicated with Earth in 2010 after getting stuck in sand.

Opportunity continues to crater-hop, logging approximately 24 miles since it landed. Most recently, Opportunity discovered geologic evidence of fresh water on Mars.

“It’s like drinking water,” planetary scientist Ray Arvidson, with Washington University in St. Louis, said in an interview with Reuters. “This would have been a niche for whatever life at the time existed.”

In 2012, Curiosity joined Opportunity on the Red Planet.

TheDay notes that the cost to continue rover exploration on Mars isn’t cheap. It costs approximately $14 million a year to maintain Opportunity.

Opportunity is currently moving south.