Word of the Week: Astronomical Unit (AU) - OSIRIS-REx Mission

Astronomical Unit (AU) Definition and Illustration

Word of the Week: Astronomical Unit (AU)

The average distance between the Earth and the Sun, approximately 150 million km (93 million miles).

For the majority of the mission, the OSIRIS-REx spacecraft will operate between 0.8 and 1.4 AU from the Sun.

Credit: University of Arizona

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