The Opportunity rover landed in a region of the Red Planet called Meridiani Planum 15 years ago today yesterday, on Jan. 24, 2004.

The golf-cart-sized rover was designed to travel 1,100 yards (1,006 meters) and operate on the Red Planet for 90 Martian days (sols). It has traveled over 28 miles (45 kilometers) and logged its 5,000th Martian day (or sol) back in February of 2018.

Source: NASA’s Opportunity Rover Logs 15 Years on Mars | NASA