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astronomical unit
(redirected from Astronomical Units)

    Also found in: Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
astronomical unit
n. Abbr. AU
A unit of length used in measuring astronomical distances within the solar system equal to the mean distance from Earth to the sun, approximately 150 million kilometers (93 million miles).
astronomical unit
Noun
a unit of distance equal to the average distance between the earth and the sun (1.495 × 1011m)
astronomical unit  (str-nm-kl)
A unit of length equal to the average distance from Earth to the Sun, approximately 149.6 million km (92.8 million mi). It is used especially to measure distances within the solar system. Compare light-yearparsec
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.Astronomical Unit - a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers)
AU
astronomy unit - a linear unit used for astronomical distances
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1 astronomical units (AU)--slightly greater than Jupiter's distance from the sun (SN: 6/16/01, p.
Rocky finding: evidence of extrasolar asteroid belt by Cowen, R. / Science News
Currently, the space object is at a distance from the sun of 97 astronomical units (AU), or the average distance from Earth to the sun.
Meet your new neighbor: it treks around the sun, and it's large than ... by Bryner, Jeanna / Science World
Recently, astronomers reported the surprising discovery of a very large diameter Kuiper Belt planetoid -- (90377) Sedna -- on a distant, 12,500-year-long, eccentric orbit centered approximately 500 astronomical units from the Sun.
SwRI Researchers Show Giant Kuiper Belt Planetoid Sedna May Have ... by Business Wire
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