A satellite or artificial satellite is an object in space, typically a spacecraft, placed into orbit around a celestial body. Satellites have a variety...

Navstar GPS, is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. It is one of...

A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication...

Satellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly...

Starlink is a satellite internet constellation operated by Starlink Services, LLC, a wholly-owned subsidiary of American aerospace company SpaceX, providing...

A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global...

A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another...

A satellite telephone, satellite phone or satphone is a type of mobile phone that connects to other phones or the telephone network by radio link through...

A satellite state or dependent state is a country that is formally independent but under heavy political, economic, and military influence or control...

Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites...