A wheeled robot named Opportunity landed on Mars in 2004 after bouncing six times on the Martian surface, which no human had ever touched. The robot was slightly more than two meters long and weighed 185 kilograms. It was protected by a group of inflatable airbags during its descent, which helped it land safely in a small crater named Eagle, measuring 22 meters in diameter. This crater was located in the Meridiani Planum region of Mars. The landing method involved a capsule covered by a heat shield, which then deployed a parachute and dropped the rover into the Martian atmosphere, where the airbags cushioned its arrival. The sequence of bounces was carefully calculated to ensure the rover landed inside the crater. Opportunity was designed to operate for 100 days but ended up working for 14 years, traveling more than 45 kilometers before a dust storm in 2018 stopped it from functioning. On its first day, it discovered thousands of small, round mineral spheres called "Martian blueberries," which provided evidence of past liquid water on Mars. The landing site was later named Challenger Memorial Station in honor of the crew of the Challenger space shuttle, which was lost in 1986. Scientists had not expected the rover to land in a crater, as it contained geological clues that the mission was searching for. The Mars Reconnaissance Orbiter confirmed the accuracy of the landing with a color image of the Eagle crater in 2006. Opportunity made several groundbreaking discoveries, including the first meteorite identified on another planet, named Heat Shield Rock. The rover's long operation and findings, including evidence of liquid water, changed the scientific understanding of Mars. The question of whether landing in the crater was crucial to the rover's success remains a topic of discussion among scientists. The precision of the landing, combined with the unexpected geological riches of the site, contributed to the rover's remarkable scientific contributions.