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The period of one revolution of sun around the centre of galaxy is called :

Parsec

Astronomical year

Cosmic year

Light year

Explanation:

The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. Estimates of the length of one orbit range from 225 to 250 million terrestrial years.

By: kamaljeet kaur

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