Difference between revisions of "Astronomical unit"

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-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? //-->
+&#9604;&#9604;&#9608;&#9600;&#9600; &#9608;&#9644;&#9608; &#9608; &#9600;&#9608;&#9600;
-== References ==
-<references />
-[[Category:Physics]]
-[[Category:Astronomy]]