Wet planets common (new simulation study by Raymond et al)

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The study by Raymond et al. explores the formation of terrestrial planets during the migration of giant planets, particularly "hot Jupiters." It reveals that as these giant planets move inward, they can create conditions for the growth of several-Earth-mass planets and very-water-rich Earth-like planets. These smaller planets often form in the habitable zone with low orbital eccentricities, suggesting a potential for habitability. The research indicates that over a third of known giant planet systems may host Earth-like planets. This simulation study enhances understanding of how wet, habitable worlds could form in diverse planetary systems.
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http://www.sciencemag.org/cgi/content/short/313/5792/1413

Exotic Earths: Forming Habitable Worlds with Giant Planet Migration
Sean N. Raymond, Avi M. Mandell, Steinn Sigurdsson

"Close-in giant planets (e.g., "hot Jupiters") are thought to form far from their host stars and migrate inward, through the terrestrial planet zone, via torques with a massive gaseous disk. Here we simulate terrestrial planet growth during and after giant planet migration. Several-Earth-mass planets also form interior to the migrating jovian planet, analogous to recently discovered "hot Earths." Very-water-rich, Earth-mass planets form from surviving material outside the giant planet's orbit, often in the habitable zone and with low orbital eccentricities. More than a third of the known systems of giant planets may harbor Earth-like planets"
 
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