Satellite construction involves assembling various components to create a functional spacecraft that orbits Earth or other celestial bodies. Key parts include the payload, which carries the instruments for data collection, and the bus, which provides power, communication, and control systems. Engineers carefully design and integrate these elements to ensure the satellite operates effectively in space. The construction process typically takes place in a clean room to prevent contamination. Once assembled, the satellite undergoes rigorous testing to simulate the harsh conditions of space, including temperature extremes and radiation exposure. After successful testing, the satellite is prepared for launch, where it will fulfill its mission objectives.