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Question

What is difference between pole star and Sirius

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Solution

POLESTAR-

  • It appears stationary in the celestial sphere unlike other stars which seem to be moving.
  • It was one of the most familiar stars for travellers in earlier times when there was not enough sources of instruments to find the directions at night.
  • It appears stationary because it is situated in the north direction along the axis of rotation of the Earth.
  • It can be located with the help of the constellation named Ursa Major.

SIRIUS-

  • It is the brightest star in the sky.
  • It is located close to the constellation named orion.
  • It is also called dog star

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