Spacecraft components are essential parts that work together to enable space missions. Key components include the structure, which provides the framework; the propulsion system, which helps maneuver in space; and the power system, typically using solar panels or batteries to supply energy. Additionally, spacecraft contain avionics for navigation and communication, as well as thermal control systems to manage temperature extremes in space. Other important elements include scientific instruments for data collection and life support systems for crewed missions, ensuring a safe environment for astronauts.