Multiple choice general knowledge science & technology

The average distance between the earth and the sun is called

  1. astronomical unit

  2. light year

  3. parallactic second

  4. none of these
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A Correct answer
Explanation

An astronomical unit (AU) is the average distance between Earth and Sun, about 93 million miles. A light year is the distance light travels in a year. Parallactic second (parsec) is a unit of interstellar distance. AU is specifically defined by Earth-Sun distance.

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