The Mars Rover Spirit was a robotic rover that explored the surface of Mars from 2004 to 2010. It was part of NASA's Mars Exploration Rover mission, designed to search for signs of past water and assess the planet's geology. Spirit traveled over 7 kilometers and made significant discoveries, including evidence of past water activity. Spirit was equipped with various scientific instruments, including cameras and spectrometers, to analyze soil and rock samples. It operated on solar power and faced numerous challenges, including dust accumulation on its solar panels. Despite these obstacles, Spirit exceeded its expected lifespan, providing valuable data about the Martian environment.