Artificial satellites are man-made objects placed into orbit around the Earth or other celestial bodies. They serve various purposes, including communication, weather monitoring, navigation, and scientific research. These satellites are launched into space using rockets and can remain in orbit for many years, depending on their design and mission. There are different types of artificial satellites, such as geostationary satellites, which stay in a fixed position relative to the Earth, and polar satellites, which orbit the planet from pole to pole. Each type plays a crucial role in gathering data and providing services that benefit society, such as GPS and television broadcasting.