An artificial object intentionally placed into orbit around a celestial body, such as the Earth, with the purpose of performing various functions. Satellites are designed to operate in outer space and serve a wide range of applications, including communication, weather monitoring, navigation, scientific research, Earth observation, and more.

Satellites are launched into space using rockets and are carefully placed into specific orbits depending on their intended missions. Once in orbit, satellites rely on their onboard systems and instruments to fulfil their designated functions.

Communication satellites are among the most well-known and widely used types of satellites. They provide essential services for global telecommunications by facilitating long-distance communication, including voice, data, and video transmissions. These satellites act as relay stations, receiving signals from ground-based transmitters and retransmitting them to other locations on Earth, enabling worldwide connectivity and communication.