Why do the patterns of the stars in our sky look the same from year to year?
A) because the stars in the constellations are so far away
B) because the stars in the constellations are not moving
C) because the stars in the constellations all move at the same speeds and in the same directions, so they don't change their relative positions
D) because the stars in the constellations move so slowly—typically about the speed of a snail—that their motions are not noticeable