Astronomers can detect extrasolar planets by observing the, Ask an Expert

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Astronomers can detect extrasolar planets by observing the slightwobble of stars due to the gravitational forces between the starsand the planets. The Sun wobbles about the center of mass of the solar system.

Find the position of the center of mass by including the Sun,Jupiter, and Saturn, which make up most of the solar system's mass.Assume that the three are in line with each other, with bothplanets on one side of the center of mass.

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