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Uploaded on May 25, 2010
SOLAR SYSTEM'S CENTER OF GRAVITY - Though we often say that the planets orbit the Sun, it is more accurate to say that the planets AND the Sun all actually orbit the common center of mass of the entire Solar System—a point known as the "Solar System barycenter." Here http://www.SkyMarvels.com (formerly celestia4all.com) uses the incredible, free astronomy-simulation software "CELESTIA" to show you this important concept. At http://www.SkyMarvels.com you can journey EVERY DAY through our wondrous Solar System and the Universe. MAY YOUR JOURNEYS BE JOYOUS!