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Planetesimal Hypothesis of Origin of the Earth

Planetesimal Hypothesis

This hypothesis was given by Chamberlin and Moulton in 1904. This biparental (binary) hypothesis of origin and also is the catastrophic hypothesis because the earth including all planets came into space due to disruptive forces between the sun and the strong gravitational pull of passing star.

According to this hypothesis a large star passed near the sun which distorted of the sun due to large gravitational pull of the star. Thus due distortion in the surface of pre existing sun a number of gaseous masses ejected out to great distance in space. Then these gaseous masses broke into a large number of small chunks were subjected to colling resulted into the formation of solid bodies which are called PLANETESIMALS.

Since these are in the area of gravitational field of the sun started rotation around the sun in the elliptical paths randomly. These planetesimals during the rotation collided with each other which resulted into breaking as well as fused together which gradually gave rise to the planets.  
On cooling, contraction and consolidation the earth and other planets originated from the pre existing sun and revolving around the sun in elliptical orbits and also rotating on their own axes.

There are 8 planets-
1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune.
 

Comments

  1. UnknownJanuary 14, 2022 at 6:32 PM

    rotating around the sun in elliptical orbits and also revolving on their own axes.


    Sir isme क्या likha h...

    ReplyDelete
  2. GeologyJanuary 14, 2022 at 8:04 PM

    Yes thanks corrected.

    ReplyDelete

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