Preview Kepler-20e, Smallest Exoplanet Image ID: 1349-924 Artist: NASA/Ames/JPL-Caltech Purchase a commercial license Buy framed prints & more from our print store artist concept astronomy celestial body deep space earth size planets epromo space illustration 12 11 2019 exoplanet illustration kepler 20 star system kepler 20e outer space planet science smallest exoplanet space art