These planets in the habitable zones of their stars, while able to support liquid water on their surfaces, develop in dry environments and need to have ice sent in from farther out. (sciencenews.org)
Because the stars are also faint, planets can be located close to the star and still have a temperature that supports liquid water on the surface. (eos-nexus.org)
In our own solar system, two moons — Enceladus and Europa — have already proven themselves worthy prospects for supporting liquid water oceans and even life. (gizmodo.com)