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Galactic center affects solar system.

Galactic center affects solar system

Since ancient times, astronomers have wondered why theplanets of the solar system are located where they are. One of the famous empirical facts about this configuration is the Titius-Bode law, observed by Johann Titius in 1766 and published by Johann Elert Bode in 1772. It says that the radii of the orbits of the planets from the asteroid belt out (except Neptune) form a geometric progression, each radius being just about twice the radius of the orbit just inside it.

Jaume Llibre and Conchita Pinol of the University ofBarcelona in Spain say they can explain the Titius-Bode law by gravity if they take into account the sun's motion around the center of the Milky Way galaxy. This sets up a four-body problem involving the gravitational interaction among the galactic center, the sun, a given planet and the planet just inward of the given planet. Presenting their calculations in the May ASTRONOMICAL JOURNAL, the researchers say that no previous attempt to explain the law has taken into account the center of the galaxy.
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Publication:Science News
Date:Jun 20, 1987
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