Mini-Neptune to Neptune-size exoplanets (1.7-6 R E ) make up about

New Neptune-sized exoplanet found spinning around a young hyperactive star

Mini-Neptune exoplanet may have an ocean or an atmosphere - or both

4 elusive 'mini-Neptune' exoplanets discovered in a cosmic game of hide-and-seek

PDF) Deep Atmosphere Composition, Structure, Origin, and Exploration, with Particular Focus on Critical in situ Science at the Icy Giants

Mini-Neptunes Turning Into Super-Earths Could Explain Exoplanet Mystery

Neptune-like Planet Types – Exoplanet Exploration: Planets Beyond our Solar System

Some Earth-Like Exoplanets May Have Started as Mini-Neptunes

PDF) Deep Atmosphere Composition, Structure, Origin, and Exploration, with Particular Focus on Critical in situ Science at the Icy Giants

Neptune-like Planet Types – Exoplanet Exploration: Planets Beyond our Solar System

Neptune-like Planet Types – Exoplanet Exploration: Planets Beyond our Solar System