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    Uranus Pathfinder: exploring the origins and evolution of Ice Giant planets

    The “Ice Giants” Uranus and Neptune are a different class of planet compared to Jupiter and Saturn. Studying these objects is important for furthering our understanding of the formation and evolution of the pl...

    Christopher S. Arridge, Craig B. Agnor, Nicolas André in Experimental Astronomy (2012)

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    Neptune's capture of its moon Triton in a binary–planet gravitational encounter

    Unique among the Solar System's large satellites, Triton orbits Neptune in the direction opposite to the planet's spin. Triton's circular orbit is also tilted significantly from Neptune's equator. These facts ...

    Craig B. Agnor, Douglas P. Hamilton in Nature (2006)

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    Hit-and-run planetary collisions

    Terrestrial planet formation is believed to have concluded in our Solar System with about 10 million to 100 million years of giant impacts, where hundreds of Moon- to Mars-sized planetary embryos acquired rand...

    Erik Asphaug, Craig B. Agnor, Quentin Williams in Nature (2006)