A satellite or artificial satellite [a] is an object, typically a spacecraft, placed into orbit around a celestial body. They have a variety of uses, including communication relay, weather forecasting , navigation ( GPS ), broadcasting , scientific research, and Earth observation.

A satellite system is a set of gravitationally bound objects in orbit around a planetary mass object (incl. sub-brown dwarfs and rogue planets) or minor planet, or its barycenter.

2023年3月22日 · Throughout the years, different types of satellites have become indispensable, supporting diverse activities ranging from broadcasting and navigation to remote sensing of the planet. They serve a variety of purposes, so it’s common to …

2018年9月5日 · A satellite is a body that orbits around another body in space. There are two different types of satellites – natural and man-made. Examples of natural satellites are the Earth and Moon. The Earth rotates around the Sun and the Moon rotates around the Earth.

2024年12月2日 · Satellite communication - Orbit, Signals, Relay: A satellite is basically a self-contained communications system with the ability to receive signals from Earth and to retransmit those signals back with the use of a transponder—an integrated receiver and transmitter of …

satellite, natural object (moon) or spacecraft (artificial satellite) orbiting a larger astronomical body. Most known natural satellites orbit planets; the Earth’s Moon is the most obvious example. All the planets in the solar system except Mercury and Venus have natural satellites.

2025年1月21日 · Some components commonly found on satellites include antennas, command and data handling, guidance and stabilization, thermal control and transponders.

2024年12月2日 · satellite communication, in telecommunications, the use of artificial satellites to provide communication links between various points on Earth. Satellite communications play a vital role in the global telecommunications system.

Modern IT system, updated monitoring stations and ground antennas. Manages current modernized constellation Launch and early orbit, Anomaly resolution, and Disposal

Satellites are built using sophisticated and sensitive electronic and mechanical components that must withstand the vibrations of a rocket launch and then operate in the harsh environment of space – without maintenance – for periods of 15 years or more.