"The average meteor enters the Earth's atmosphere at a speed of about twenty-five miles a second. At the same time the Earth is moving through space at eighteen and a half miles a second. Should the meteor hit our atmosphere in a direction opposite the Earth's motion, the meteor's falling velocity will be almost forty-five miles a second."
Illustration: "Fireball exploding in Earth's atmosphere."
Issue: The Flash #113 (June-July 1960)