An astronomical unit (AU) is
A. any very large unit, such as a light-year.
B. the average distance between Earth and the Sun.
C. the current distance between Earth and the Sun.
D. the average distance between any planet and the Sun.
Answer:B
An astronomical unit (AU) is
A. any very large unit, such as a light-year. B. the average distance between Earth and the Sun. C. the current distance between Earth and the Sun. D. the average distance between any planet and the Sun.