cosmic year

noun

: the estimated time required for a star at the sun's distance from the center of the Milky Way galaxy to make one trip around it in a circular orbit, about 200 million years

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Cite this Entry

“Cosmic year.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20year. Accessed 5 Nov. 2024.

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