The concept of orbiting bodies is complicated by the fact that no real system exists--be it satellite and planet, planet and sun, of binary stars--in which one object revolves around the center of the other. Rather, both bodies revolve about a common center of mass. The idea of center of mass enters into discussions of dynamics throughout an astronomy course or unit, beginning with the motions of the Solar System and recurring in analyses of stellar systems and of galaxies
Iowa Science Teachers Journal
© Copyright 1990 by the Iowa Academy of Science
Iowa Science Teachers Journal: Vol. 27
, Article 7.
Available at: https://scholarworks.uni.edu/istj/vol27/iss2/7