Two of Kepler-138e's companion planets were just discovered last month! They are bigger, classified as super-Earths, and may be water worlds! https://go.nasa.gov/3XIaK7g #NASAExoplanets
Two exoplanets orbiting a red dwarf star may be "water worlds." They are 218 light-years away in the constellation Lyra, and are unlike any planet found in our solar system.
