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      Origin of the cataclysmic Late Heavy Bombardment period of the terrestrial planets

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          Disk Frequencies and Lifetimes in Young Clusters

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            Origin of the orbital architecture of the giant planets of the Solar System.

            Planetary formation theories suggest that the giant planets formed on circular and coplanar orbits. The eccentricities of Jupiter, Saturn and Uranus, however, reach values of 6 per cent, 9 per cent and 8 per cent, respectively. In addition, the inclinations of the orbital planes of Saturn, Uranus and Neptune take maximum values of approximately 2 degrees with respect to the mean orbital plane of Jupiter. Existing models for the excitation of the eccentricity of extrasolar giant planets have not been successfully applied to the Solar System. Here we show that a planetary system with initial quasi-circular, coplanar orbits would have evolved to the current orbital configuration, provided that Jupiter and Saturn crossed their 1:2 orbital resonance. We show that this resonance crossing could have occurred as the giant planets migrated owing to their interaction with a disk of planetesimals. Our model reproduces all the important characteristics of the giant planets' orbits, namely their final semimajor axes, eccentricities and mutual inclinations.
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              Chaotic capture of Jupiter's Trojan asteroids in the early Solar System

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                Author and article information

                Journal
                Nature
                Nature
                Springer Science and Business Media LLC
                0028-0836
                1476-4687
                May 2005
                May 2005
                : 435
                : 7041
                : 466-469
                10.1038/nature03676
                © 2005

                http://www.springer.com/tdm

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