A satellite is an object that orbits around a planet or other celestial body.
Moon is a natural satellite.
There are several major types of satellites, including:
Geostationary satellites: These satellites are placed in a geostationary orbit, which is an orbit at an altitude of 36,000 km above the Earth's equator. This allows the satellite to remain in a fixed position relative to a point on the Earth's surface, enabling it to provide continuous coverage of a specific geographic area. They are primarily used for communication, such as television and telephone transmission, as well as weather forecasting.
Low Earth orbit (LEO) satellites: These satellites orbit the Earth at altitudes of up to 2,000 kilo meters. They are used for a variety of purposes, including Earth observation, scientific research, and satellite-based navigation systems like GPS. LEO satellites are relatively close to the Earth, which means they can take high-resolution images and collect data with greater accuracy. They are also used for satellite internet and global positioning systems.
Medium Earth orbit (MEO) satellites: These satellites orbit the Earth at altitudes between 2,000 and 35,786 kilo meters. They are used for communication and navigation. MEO satellites are positioned at a higher altitude than LEO satellites, which allows them to cover a larger area of the Earth's surface. They are used for navigation systems like GPS, as well as for mobile communication services such as satellite phones.
Polar orbiting satellites: These satellites orbit the Earth in a north-south direction, passing over both the North and South poles. They are used for Earth observation and meteorology. Because they pass over the poles, they can take images of the entire Earth's surface, providing valuable data for weather forecasting and climate research.
Other types of satellites are:
Helio synchronous satellite: These satellites orbit around sun at the same speed and direction as the Earth's rotation. They are used for weather forecasting, Climate research, and natural resource management. Because they are positioned in line with the sun, they can continuously monitor solar activity and provide early warning of solar storms, which can disrupt communication and power systems on Earth.
Lunar satellites: These satellites orbit around Moon, they are used for scientific research and communication purposes. They are used to map the surface of the moon, study its geology, and search for resources such as water. They can also be used for communication relays, allowing for communication between spacecraft on the lunar surface and Earth.
Interplanetary satellites: These satellites orbit around other planets, they are used for scientific research and discovery of new planets and galaxies. They are used to study the atmosphere, geology, and potential habitability of other planets, and to search for signs of life. They can also be used to study the composition and structure of other celestial bodies, such as asteroids and comets.
Source - Internet