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Showing 1–6 of 6 results
Advanced filters: Author: William J. Borucki Clear advanced filters

  • Two double-sun exoplanets have been discovered by the Kepler spacecraft, establishing a new class of ‘circumbinary’ exoplanets and suggesting that at least several million such systems exist in our Galaxy.

    • William F. Welsh
    • Jerome A. Orosz
    • William J. Borucki
    Research
    Nature
    Volume: 481, P: 475-479

  • Whereas large planets, such as gas giants, are more likely to form around high-metallicity stars, terrestrial-sized planets are found to form around stars with a wide range of metallicities, indicating that they may be widespread in the disk of the Galaxy.

    • Lars A. Buchhave
    • David W. Latham
    • Samuel N. Quinn
    Research
    Nature
    Volume: 486, P: 375-377

  • Two exoplanets of Earth’s size have been discovered in orbit around the star Kepler-20.

    • Francois Fressin
    • Guillermo Torres
    • Kamal Uddin
    Research
    Nature
    Volume: 482, P: 195-198

  • When an extrasolar planet passes in front of its star (transits), its radius can be measured from the decrease in starlight and its orbital period from the time between transits. This study reports Kepler spacecraft observations of a single Sun-like star that reveal six transiting planets, five with orbital periods between 10 and 47 days plus a sixth one with a longer period. The five inner planets are among the smallest for which mass and size have both been measured, and these measurements imply substantial envelopes of light gases.

    • Jack J. Lissauer
    • Daniel C. Fabrycky
    • Jason H. Steffen
    Research
    Nature
    Volume: 470, P: 53-58