Read Edit View history 宇宙年 yǔzhòunián cosmic year Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 宇宙年 yǔzhòunián cosmic year The time it takes for the sun to complete one orbit around the center of the Milky Way galaxy, estimated to be about 2 billion Earth years Edit Delete References Add reference see 宇宙年/宇宙年 → 地球年/地球年 Edit Delete
宇宙年 yǔzhòunián cosmic year The time it takes for the sun to complete one orbit around the center of the Milky Way galaxy, estimated to be about 2 billion Earth years Edit Delete