The standard picture of planet formation posits that giant gas planets are over-grown rocky planets massive enough to attract enormous gas atmospheres. It has been shown recently that the opposite point of view is physically plausible: the rocky terrestrial planets are former giant planet embryos dried of their gas ``to the bone'' by the influences of the parent star. Here we provide a brief overview of this ``Tidal Downsizing'' hypothesis in the context of the Solar System structure.
The Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution
- Pub Date:
- November 2011
- planetary systems;
- planets and satellites: formation;
- Astrophysics - Earth and Planetary Astrophysics
- contributed talk to the IAU 276