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    Gravitational forces in Protoplanetary Disks tagged posts

    Gravitational forces in Protoplanetary Disks may push Super-Earths close to their Stars

    May 12, 2019, Categories  Astronomy/Space

    An artist’s concept of super-Earth planet 55 Cancri e, which races around its host star once every 18 hours. New research led by Penn State astronomers improves our understanding of how large super-Earth planets with small, quick orbits form. Credit: NASA/JPL-Caltech
    An artist’s concept of super-Earth planet 55 Cancri e, which races around its host star once every 18 hours. New research led by Penn State astronomers improves our understanding of how large super-Earth planets with small, quick orbits form. Credit: NASA/JPL-Caltech

    Astronomers found that as planets form out of the chaotic churn of gravitational, hydrodynamic – or, drag – and magnetic forces and collisions within the dusty, gaseous protoplanetary disk that surrounds a star as a planetary system starts to form, the orbits of these planets eventually get in sync, causing them to slide – follow the leader7-style – toward the star.

    The galaxy is littered with planetary systems vastly different from ours...

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