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Q. The period of one revolution of sun around the centre of galaxy is called: (Solved)
1. Parsec
2. Astronomical year
3. Cosmic year
4. Light year
c. Cosmic year
Related Topics
→ Atmosphere
→ Fundamentals of World Geography
→ Rocks and Mountains
→ Seasons on Earth, Facts on Agriculture, Minerals and Industries
→ The Earth
→ The Water World, Facts and Countries
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