Light year

One light year (abbreviated ly) is the distance that light travels in one Earth year. It is approximately equal to 9.46 kilometers, or 5.88 miles. Light years are common units of measurement used in starship navigation. 

In the Treaty of Armens (2255), it is stipulated, ''Third party assistance may be requested from a Federation Starfleet vessel or a Sheliak Corporate spacecraft if the distance from the vessel to the respective homeworld is greater than five thousand (5.0 10E3) lightyears. UFP Standards Measurement Bureau Units. Assistance may also be assisted if the vessel is less than 1000 lightyears from a standard UFP subspace relay booster station.''

When Commander Benjamin Sisko welcomed the first guest from the Gamma Quadrant in the Alpha Quadrant, a Tosk, he told him that he traveled almost ninety thousand light years through the wormhole. 

In 2369, a Vanoben transport was raided two light years away from Deep Space 9. 

The same year, Sisko told Kai Opaka that the Gamma Quadrant is seventy thousand light years away from Bajor. 

Related links

 * Astronomical unit
 * Light day
 * Light hour
 * Parsec

Background
The exact length of a light year depends on the exact length used for one "Earth year". The uses a  of 365.25 days, while other sources may use a  of 365.2425 days, or another year altogether. &Dagger; Note that while Yahoo separately reports a year length of 365.24220 days, its rounding of the light year length to five digits works out to a year length of ~365.2411 days.

External link


Светлинна година Lichtjahr Año luz Année-lumière Anno luce 光年 Lichtjaar Svjetlosna godina