What is unmanned exploratory spacecraft?

Unmanned exploratory spacecraft are robotic vehicles designed to investigate celestial bodies and phenomena without human presence. These spacecraft can be used for a variety of missions, including planetary exploration, asteroid studies, and observations of comets and other astronomical objects. Equipped with scientific instruments, they collect data and transmit it back to Earth for analysis, helping to expand our understanding of the universe. Notable examples include NASA's Mars rovers and the Voyager probes.