Earth as a Planet

Shape and Size of the Earth

  • During earlier times it was believed that the shape of the Earth is a flat disc.
  • The main believers of this idea were the Greeks, the Babylonians and, the ancient Indians.
  • Aryabhatta, the famous Indian astronomer believed that Earth was spherical in shape and rotated .... Read More

The Conditions that Favour Life on Earth

  • Life on the earth exists in a narrow zone called Biosphere. All the necessities for life are fond in this zone. It is the narrow realm of contact and interaction among Atmosphere, Lithosphere and Hydrosphere.
  • Energy that brings these three domains together is that of the sun. L .... Read More

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