Question

What is an artificial satellite?

Answer 1

Man made machines that revolves around the earth are called artificial satellites.
We know moon as a satellite of our planet Earth, any object that revolves around a planet is called a satellite. Like planet earth, other planets in our solar system also have number of satellites revolving around them.
Man made satellites are called artificial satellites because these are not natural or one of the heavenly bodies present in space.
Artificial satellites are used by various organisations involved in research, military or global positioning purposes etc.