The yearly motion of celestial objects in the sky is caused by
A) the rotation of our planet about its axis.
B) the revolution of our planet around the Sun.
C) the movement of our planet within the Milky Way.
D) the tilt of Earth's axis.
Question 2
The background stars during a solar eclipse are those of constellations
A) of the opposite season.
B) seen in the nighttime sky.
C) not seen normally.
D) seen in the opposite hemisphere.