TNPSC Thervupettagam

Earth Revolution around the Sun

July 18 , 2024 8 hrs 0 min 30 0
  • The movement of Earth currently in the Solar System is not currently orbiting the Sun.
  • In the Solar System, the Sun is the largest object and has 1,048 times the mass of Jupiter.
  • However, the gravitational pull which Earth exerts on the celestial body is exerted in the same or smaller amount on the planet.
  • Kepler's third law describes the relationship between the masses of two objects mutually revolving around each other and the determination of orbital parameters.
  • Earth orbits a barycentre and not exactly the Sun.
  • Generally, the barycentre of the bodies in the Solar System is near the Sun.
  • However, because of the mass, and influence of gas giants Jupiter and Saturn and orbits, it is rarely inside the Sun.
  • Currently, the barycentre is outside the Sun and not inside it and hence, Earth is not currently orbiting it.
  • So, the planet is revolving around a point in space and not the Sun.
  • The Earth and Moon orbit a point which is 5,000 kilometres (3,100 miles) from the Earth's centre.
  • However, this keeps changing as the Moon slowly moves away from the Earth.

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