ONE HUNDRED QUESTIONS AND ANSWERS ON “RECREATIONS IN
ASTRONOMY,” CHAPTERS I TO VII, BOTH INCLUSIVE—CREATIVE
PROCESSES, CREATIVE PROGRESS, ASTRONOMICAL INSTRUMENTS,
CELESTIAL MEASUREMENTS; THE SUN; THE PLANETS, AS SEEN FROM
SPACE; SHOOTING-STARS, METEORS, AND COMETS.
By ALBERT M. MARTIN, GENERAL SECRETARY C. L. S. C.
1. Q. What are the two laws of the attraction of gravitation? A. (1)
Gravity is proportioned to the quantity of matter, and (2) the force
of gravity varies as the square of the distance from the center of the
attracting body.