So, if large moons are abundant across the galaxy, habitable planets might be as well. (newscientist.com)
Its shape, size and composition — round, roughly the size of Texas and at least 20 percent water ice — place it at the poorly understood transition point between rocky worlds like Earth and icy worlds like Jupiter's Europa, Saturn's Enceladus, and other large moons of the outer solar system. (scientificamerican.com)