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terms used in the encyclopedia

It is now known that many units of measurement that have been in existence since the pre-hyperspatial era are associated with the astronomical movements of Earth and Sol in the Sirius sector.

Astronomical Unit (AU)
Galactic Standard Day (GSD) An arbitrary length of team equal to 2?.??? hours parsec The distance at which the radius of the Earth's orbit subtends an angle of 1 second or arc.  3.258 lt. yrs
Galactic Standard Year (GSY) An arbitrary length of time equal to 365.??? GSDs
light year (lt. yr.) Distance traveled by light in 1GSY.   Equal to
speed of light 3 x 108 ms-1
Galactic Rotational Year (GRY) Time for the Galaxy to complete one revolution. (approx. 250,000,000 years)