What’s a parsec? Rationalization and calculation

A parsec is a unit of distance utilized by astronomers as an alternative choice to a moon-year, simply as a kilometer is an alternative choice to a mile. Sci-fi franchises comparable to “Star Wars” are recognized to misuse the phrase “parsec”, mistakenly describing it as a measure of time or velocity.

In truth, one parsec is 3.26 gentle years, or about 19 trillion miles (31 trillion km), in keeping with the California Institute of Expertise. (opens in new tab) (Caltech).

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