Ganymede

Ganymede

Callisto, also known as Jupiter's moon Callisto (pronounced/k əˈ l ɪ sto ʊ, Greek: Καλλιστώ), is a satellite that orbits Jupiter and was first discovered by Galileo Galilei in 1610. Europa is the third largest moon in the solar system and the second largest moon of Jupiter, second only to Ganymede.
satellite

satellite

A satellite refers to a natural celestial body that orbits a planet in a closed orbit and performs periodic movements. Artificial satellites are also commonly referred to as satellites. Artificial satellites are devices built by humans and launched into space using spacecraft such as rockets and space shuttles, orbiting the Earth or other planets like natural satellites. Often, gas planets have many satellites. The eight major planets have a total of 218 satellites, with all planets except Mercury and Venus having satellites orbiting them. The ranking order by the number of satellites is Saturn 82, Jupiter 92, Uranus 27, Neptune 14, Mars 2, and Earth 1.
3D model of communication satellite

3D model of communication satellite