Distribution of planetary radius as a function of distance to the star. Physical properties of exoplanets were extracted from the Extrasolar Planets Encyclopaedia (exoplanet.eu) in April 2018. Evaporation shaped the population of hot close-in planets, likely resulting in the formation of a desert of hot planets with intermediate size. The warm Neptunes GJ 3470b and GJ 436b lie at the edge of this desert.
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