Definitions by Maverician
The astronomical unit (AU or au or a.u. or rarely ua) is a unit of distance, approximately equal to the mean distance between Earth and Sun. The currently accepted value of the AU is 149,597,870,691 ± 30 metres (about 150 million kilometres or 93 million miles).
AU by Maverician March 24, 2005
ITW
ITW by Maverician March 18, 2005