Second alignment plane of solar system discovered
(World News Science)

WASHINGTON:: A study of comet motions indicates that the solar system has a second alignment plane. Analytical investigation of the orbits of long-period comets shows that the aphelia of the comets, the point where they are farthest from the Sun, tend to fall close to either the well-known ecliptic plane where the planets reside or a newly discovered 'empty ecliptic.' This has important implications for models of how comets originally formed in the solar system. In the solar system, the planets and most other bodies move in roughly the same orbital plane,...