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Planetary Science

  • Initial results from the New Horizons exploration of 2014 MU69, a small Kuiper Belt object

    Initial results from the New Horizons flyby of Kuiper Belt object (486958) 2014 MU69, a contact binary, are presented.

  • What makes a planet habitable?

    Efforts to identify habitable planets must look beyond atmospheres to planetary interiors

  • The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes

    The near-Earth asteroid Ryugu probably formed by reaccumulation of rubble from an impact on a larger parent asteroid.

  • The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

    Near-Earth asteroid Ryugu’s surface is dark and partially hydrated, similar to heat-processed carbonaceous meteorites.

  • Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu—A spinning top–shaped rubble pile

    The Hayabusa2 spacecraft measured the mass, size, shape, density, and spin rate of asteroid Ryugu, showing that it is a porous rubble pile.

  • A planetesimal orbiting within the debris disc around a white dwarf star

    A small, dense planet orbits within the gaseous disc around a white dwarf.

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