Satellites
Satellites are man-made objects that orbit around the Earth or other celestial bodies. They are used for various purposes such as communication, navigation, weather forecasting, remote sensing, and scientific research. Satellites can be classified into different types based on their orbits, altitude, and functions. Geostationary satellites orbit at an altitude of 36,000 km and remain fixed over a particular location on the equator, providing continuous coverage for communication and broadcasting. Low Earth orbit (LEO) satellites orbit at an altitude of 160-2000 km and are used for remote sensing, Earth observation, and scientific research. Medium Earth orbit (MEO) satellites orbit at an altitude of 2000-36,000 km and are used for navigation and positioning. Satellites are launched into space using rockets and are controlled from the ground stations. They are powered by solar panels and batteries and have a limited lifespan. When their mission is over, they can be deorbited and burned up in the Earth's atmosphere.
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