Types of satellites
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Artificial satellite 
Natural satellites
Weather Satellites are used to monitor Earth's weather & climate. They help in predicting weather & observing changes in the environment. Example; TIROS
Navigation satellites are part of a system that provides autonomous geo-spatial positioning with global coverage. They also allow electronic receivers to determine their location. Example GPS (Global Positioning System)
Earth’s Moon: The most well-known natural satellite, our Moon, is used for a variety of purposes. It has been the site of numerous space missions, including the Apollo missions which brought back lunar rocks for study. The Moon also affects Earth’s tides.
Earth observation satellites are used to observe Earth's surface to obtain valuable information for mapping, mineral exploration, land-use planning, & resource management among other activities.
Research satellites are used for scientific research purposes, such as physics, astronomy, & meteorology.
Military satellites are used for reconnaissance, gathering intelligence, surveillance, & other defense-related applications.
Communication satellite satellites are used to relay &lify radio telecommunication signals via a transponder, creating a communication channel b/w a source transmitter & a receiver at different locations on Earth. Example; INTELSAT
Mars’ Moons (Phobos and Deimos): These moons are of interest for future human missions to Mars as potential sites for bases.
Jupiter’s Moons: Jupiter has 67 known moons, including the four large Galilean moons, Io, Europa, Ganymede, and Callisto. These moons have been the focus of several space missions, which have provided valuable information about the Jovian system and the potential for life on Europa.
Saturn’s Moons: Saturn has 82 known moons. Titan, the largest, has a dense atmosphere and a liquid hydrocarbon lake, making it a target of interest for studies on potentially habitable environments.
Uranus’ Moons: Uranus has 27 known moons. Miranda, one of its largest moons, has the highest cliff in the solar system, known as Verona Rupes. Future missions could study this and other unique geological features.
Neptune’s Moons: Neptune has 14 known moons. Triton, the largest, is geologically active, with geysers erupting nitrogen gas from beneath the surface. This makes Triton an intriguing target for future study.
Pluto’s Moons: Pluto, now classified as a dwarf planet, has 5 known moons. Its largest moon, Charon, is so big that Pluto and Charon are sometimes considered a binary system. The New Horizons mission in 2015 provided valuable data about these distant bodies.