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galactic year
From Wiktionary, the free dictionary
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English
Noun
galactic year (plural galactic years)
- (astronomy) The time taken for the Solar System to orbit around the center of the Milky Way Galaxy, estimated to be from 225 to 250 million years.
- (astronomy, by extension) The time taken for a celestial body to complete a quasi-orbit in a galaxy.
Synonyms
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