cosmic year


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cosmic year

(galactic year) The period of revolution of the Sun about the center of the Galaxy, equal to about 220 million years.

cosmic year

[′käz·mik ′yir]
(astronomy)
The period of rotation of the Milky Way Galaxy, about 220 million years.
References in periodicals archive ?
We may be approaching the cosmic year 2000 but Britain remains resolutely stuck in the cosmetic 1970s.
SPACE 1999 is here and it is a cosmic year in more ways than one.