Astronomical Unit

Views Updated: Dec 15, 2025

Key Facts

Abbreviation
AU
Pronunciation
/ˌæstrəˈnɑmɪkəl ˈjunɪt/
Category
Governmental
Related Field
NASA

Examples in Context

  1. Know astronomical unit and light year are used for expressing the distance between celestial bodies.
  2. Most planet-formation models predict a planet desert within one astronomical unit ( or the average distance from the Earth to the sun ) of a host star.
  3. Light-time for astronomical unit distance

Other meanings of AU

Australia Regional
Author Academic
Automatic Update Computing
Automatic Updates Computing
Atomic Units Misc
Astronomical Units Misc
African Union Regional
American University Academic
African Unity Gov
AU (mobile phone company) Regional