Astronomy View all facts Glossary Help| Astronomy View all facts Glossary Help |
| abstraction > mathematical concept > unit > time unit > cosmic year |
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| cosmic year comparison table | ||||
| Subject | is an instance of | is a kind of | has value | has definition |
|---|---|---|---|---|
| time unit | unit | |||
| cosmic year | time unit | 225 million years | Time the Sun takes to "orbit" in galactic rotation: about 225 million years. |