A newly discovered planet orbiting a small, nearby star appears to be a “water world,” with a surface that might be covered with liquid water.

“This is certainly the first planet around another star which we think is mostly made of water,” says David Charbonneau of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., who led the research team that found the new planet, named GJ 1214b.

(via NPR)