You searched for: “cosmic year
cosmic year (s) (noun), cosmic years (pl)
A period of approximately 220 million years, the time it takes for the sun to make one orbit around the center of the Milky Way Galaxy.
Word Entries at Get Words: “cosmic year
cosmic year
The time it takes the sun to travel around the center of the galaxy, roughly 22.5 million years.
This entry is located in the following unit: Astronomy and related astronomical terms (page 7)