Satellites: A satellite is a large body, which revolves around a planet. The Solar System has 162 satellites. Out of these satellites, Jupiter has 63, Saturn has 56, Uranus has 27, Neptune has 13, Mars has 2 and Earth has one satellite(Moon). The major Satellites of the Solar System are as under: Earth: Moon Mars:
Historical Background: It is the doctrine that human activities are controlled by environment. This belief has deep roots in ancient history. For example, Hippocrates linked the characteristics of people in a particular place to the influence of environmental factors such as terrain, altitude and humidity. Similarly Aristotle also said that the world’s climatic zones determined
Comet: The name comet has been derived from the Greek word Kometes meaning ”Hair Like”. A comet is a large snowball of frozen gases with very little solid matter. it possesses a small nucleus of ice and dust surrounded by a bright cloud of gas and dust. there are about 100,000 comets in our solar
