That we do not get eclipses every new and full Moon is due to the ________ degree tilt of the Moon's orbit, relative to the ecliptic.
Fill in the blank(s) with correct word
Question 2
The quantity called the enclosed mass M(
A) concentrated in the center
B) spread out over a large volume
C) distributed in the shape of a doughnut, with a hole in the center
D) impossible to say