Satellite (noun)

1. An object that orbits around a planet or other celestial body.
2. A man-made device placed in orbit around the Earth for the purpose of communication, navigation, or observation.
3. Something that serves or supports something else.

Origin:

Late 16th century: from modern latin satelles, from latin sattellites, from greek satēllites 'attendant', from satellein 'to attend', from sat- 'with' + ellein 'to go'.

Examples:

1. The moon is a natural satellite of the Earth.
2. The satellite was launched to provide global internet coverage.
3. The GPS system relies on a network of satellites for navigation.
4. Several satellites are used to monitor weather patterns.
5. The company has several satellite offices located in different regions.