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Line 1: − The astronomical unit ([[AU]]) is the mean [[Sun]]-[[Earth]] distance, a unit of distance widely used in expressing distances in the solar system. 1 AU = 149,597,870.691 km<ref>[http://www.iau.org/public/measuring/ The IAU and astronomical units] - International Astronomical Union site</ref>, or approximately 93 million miles. <!-- which mile? landmine, nautical mile, roman mile? //-->+ − − == References == − <references /> − − [[Category:Physics]] − [[Category:Astronomy]]
Astronomical unit (view source)
Revision as of 14:35, September 13, 2011
, 14:35, September 13, 2011no edit summary
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