関連ワード:
why does astronomers use astronomical unit why do astronomers use astronomical units why do astronomers use astronomical units to measure distances in the solar system why do astronomers use astronomical units instead of kilometers why do astronomers and engineers use astronomical units to describe distances in the solar system do astronomers use astronomical unit why don't astronomers use astronomical units to measure distances to nearby stars why is astronomical unit important why do we use astronomical units what is astronomical unit used for
