In Spanish: de Pársecs a Leguas marinas
Parsecs
distance at which an object would have a parallax of one arc second. Equals approximately 3.26 light years or about 206,265 astronomical units.
Nautical Leagues
A nautical league was 6,080 yards - or three nautical miles (each league being 6,080 feet).
Note that there also US Leagues, UK Leagues and UK Nautical Leagues which all differ.
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