Robotic landers are unmanned spacecraft designed to land on the surface of celestial bodies, such as planets or moons. They are equipped with scientific instruments to conduct experiments, gather data, and take images of their surroundings. These missions help scientists learn more about the composition, geology, and atmosphere of these distant worlds. One well-known example of a robotic lander is the Mars Phoenix Lander, which successfully landed on Mars in 2008. It studied the Martian soil and searched for signs of water, contributing valuable information to our understanding of the planet's history and potential for life.