Being a kid, a question that always haunted my mind was, when I walk at night why is the moon always moving with me in my direction? If we look into the scientific reason now, we can reason it out. Satellite can be defined as celestial body that surrounds any planet and rotates around it. For example, moon is a satellite that surrounds Earth and rotates around it. Any satellite has its own independent orbit. There are two types of satellites – Artificial satellite and natural satellites.