Pioneered the study of chaos in the solar system. Demonstrated the theoretical reason for the clearing of the Kirkwood gaps in the asteroid belt. Uncovered the chaotic rotation of H...
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Pioneered the study of chaos in the solar system. Demonstrated the theoretical reason for the clearing of the Kirkwood gaps in the asteroid belt. Uncovered the chaotic rotation of Hyperion, chaos in the orbital evolution of Pluto, and the chaotic obliquity of Mars.