c. Students know how to use astronomical units and light years as measures of
distances between the Sun, stars, and Earth.
d. Students know that stars are the source of light for all bright objects in
outer space and that the Moon and planets shine by reflected sunlight, not by
their own light.
e. Students know the appearance, general composition, relative position and
size, and motion of objects in the
solar system, including planets, planetary satellites,
asteroids originally thought to be stars are now known to be distant galaxies.