Monday, May 10, 2010
"The moon falls about 1/20th of an inch toward the Earth every second. But because in that same time-period, the moon also moves about 3,300 feet in a horizontal direction, it is just enough to compensate for the fall and keep the moon in its steady orbit around the Earth."
Illustration: "Segments of elliptical orbits of Earth and moon."
Issue: The Flash #128 (May 1962)