We always see the same face of the moon, and that is not a coincidence. Gravity from the earth tugs har on t nearer ha of t moon, stret the wh body in a ve shallow ov. Rotation wo have to drag that bulge continuously around, and dragging always costs energy, so the spin slowed across millions of years until it matched the orbit precisely. The same process has locked a great many other moons to the planets they circle.

Type only the missing letters. Each box is one letter, and the number of boxes matches the letters that are missing.