Earth's Origin and Evolution

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According to Hindu mythology, the Earth rests on the back of four big elephants, which stand on the back of a great tortoise (Kurma). Some beliefs also mention that Earth rests on the head of Sheshnag

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1. Monistic Hypothesis - Earth originated from a single star (one parent hypothesis) 2. Binary Star/Dualistic Hypothesis - Earth originated from collision between two stars 3. Theory based on gaseous

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The Nebular Hypothesis was first presented by German philosopher Immanuel Kant in 1755. Later, in 1796, French mathematician Pierre-Simon Laplace modified and improved this hypothesis.

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According to the Nebular Hypothesis, there was initially a cool, motionless gaseous cloud in space. Gravitational attraction caused particles to collide and heat up, forming a rotating hot nebula. As

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The Tidal Hypothesis was proposed by British geographers Sir James Jeans and Sir Harold Jeffreys in 1919. It suggests that a massive roaming star passed close to the Sun, creating a tidal bulge on the

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T.C. Chamberlain and Forest Ray Moulton (American scientists) presented the Planetesimal Hypothesis in 1900. It suggests that a randomly moving star passed near the Sun, and its gravitational force pu

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Proposed by Russian scientist Otto Schmidt in 1943, this hypothesis suggests that the primitive Sun already existed. About 600 crore years ago, hydrogen, helium gases, and dust clouds were attracted t

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Our solar system has 8 planets. They are divided into two categories: 1. Terrestrial planets (rocky): Mercury, Venus, Earth, Mars 2. Jovian planets (gas giants): Jupiter, Saturn, Uranus, Neptune