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An astronomical unit (AU) is equal to which of the following? A. the mean distance between Earth and Alpha Centauri B. the length of the semimajor axis of our solar system C. the mean radius of all observable spiral galaxies D. the mean distance between Earth and the Sun
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An astronomical unit (AU) is equal to: the mean distance between Earth and the Sun.
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Asked 6/2/2013 6:28:13 PM
Updated 9/20/2015 12:24:25 PM
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An astronomical unit (AU) is equal to: the mean distance between Earth and the Sun.
Added 9/20/2015 12:24:25 PM
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An astronomical unit (AU) is equal to B.the length of the semimajor axis of our solar system.

Added 7/6/2013 2:15:07 PM
This answer has been flagged as incorrect.
Flagged by Janet17 [9/20/2015 12:23:54 PM]
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The apparent displacement of an object as it is viewed from two different positions is known as A. parallax. B. a parsec. C. a light-year. D. an arcsecond.
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Updated 10/24/2016 1:35:07 AM
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The apparent displacement of an object as it is viewed from two different positions is known as: parallax.
Added 10/24/2016 1:35:07 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [10/24/2016 1:39:03 AM]
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