Contact: Christine Pulliam
Harvard-Smithsonian Center for Astrophysics
Caption: This artist's conception shows a planet forming from a disk of gas and dust surrounding a young star. New research finds that exoplanets can be divided into three groups – terrestrials, gas giants, and mid-sized "gas dwarfs" – based on how their host stars tend to fall into three distinct groups defined by their compositions.
Credit: David A. Aguilar (CfA)
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