Are astronomical units measured in light years?

Question

Are astronomical units measured in light years?

Answer 1

light to travel one year

Answer 2

No! One astromical unit is distance between Sun and Eath and it equals 149 598 000 kilometers.

Answer 3

astronomical **distances** are measured in light years, or parsecs.

units is a very vague term.

Answer 4

yes.....

im not sure but i think they're 2 faces 4 1 coin

Answer 5

They can be.  Astronomers like parsecs better for whatever reason.  Light years seem to only used to express distances when writing for popular audiences.  Also remember that "astronomical unit" has a precise meaning as well--the distance to the sun.

http://en.wikipedia.org/wiki/Parsec