The Planets

Earth Centered Solar System

The ancient scientists and astronomers discovered that besides the Moon and Sun, there were five more tiny moving lights in the night sky. And those were only can be seen with the bare eye. The named these lights Planets. Planets mean wanderers. They ware named after the ancient Roman Gods- Mercury, Mars, Saturn, Venus, and Jupiter. But during the 15th century, after inventing the telescope, mankind discovered the more distant Planets like- Neptune, Uranus, and Pluto. The early cultures believed that the Planets have some connection with the human, and they can influence their daily life. During the second century, some astronomer(especially Ptolemy) described some solar system having the Earth at the center.