Difference between revisions of "Astronomical unit"
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| − | The '''astronomical unit''' is a unit of measurement equivalent to ([[AU]]) the mean distance between the [[Sun]] and [[Earth]]. The AU is used widely 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> | + | The '''astronomical unit''' is a unit of measurement equivalent to ([[AU]]) the mean distance between the [[Sun]] and [[Earth]]. The AU is used widely 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 == | ||
Latest revision as of 02:08, July 13, 2016
The astronomical unit is a unit of measurement equivalent to (AU) the mean distance between the Sun and Earth. The AU is used widely in expressing distances in the solar system. 1 AU = 149,597,870.691 km,[1] or approximately 93 million miles.
References
- ↑ The IAU and astronomical units - International Astronomical Union site