Convert 18 Light Years to Parsecs
How far is 18 light years? How long is 18 light years in parsecs? 18 ly to pc conversion.
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18 Light Years ≈
5.5188251 Parsecs
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Result in Plain English
18 light years is equal to about 5.52 parsecs.
In Scientific Notation
18 light years
= 1.8 x 101 light years
≈ 5.51883 x 100 parsecs
Light Years
A light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. A light year is defined as exactly 9,460,730,472,580.8 kilometers.
Parsecs
A parsec is a unit of distance used in astronomy. It is exactly 648,000 / Pi astronomical units, or approximately 30.9 trillion kilometers.