A satellite is a body which is revolving continuously in an orbit around a much larger body. There are two types of satellites which is Natural and Artificial.
Natural satellites are those which are made by nature. For example, earth is satellite of sun and moon is a satellite of earth. With the advancement of science and technology, many man-made satellites have been put in different orbits around the earth. Such satellites are called as artificial satellites. First artificial satellite was launched by Russia named Sputnik 1 in year 1957.