1 min readSize Comparisons of Kepler PlanetsNASAMay 02, 2012 Image Article Size Comparisons of Kepler Planets Comparative sizes of planets discovered by Kepler. Jupiter, Neptune and Earth are shown for comparison as well. “RE” in the diagram means size relative to Earth or RE = Radius of the planet in Earth radii. Credit: NASA/Kepler Mission/Wendy Stenzel