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| 1. |
Deduce a relation between one light year and one parsec. |
| Answer» Light year is the distance travelled by light in one year. And a parsec is defined as the distance at which one astronomical unit subtends an angle of one arcsecond,[1] which corresponds to 648000/π astronomical units. One parsec is equal to about 3.26 light-years (30 trillion km or 19 trillion miles) in length. | |