From Pluto, with love If you count it as a planet, it is the furthest away and smallest. Whether or not you think it’s a planet, it might harbor life. Here are a few links that cover the ongoing debate over Pluto’s status as a planet. Pluto should be reclassified as a planet, scientists argue Pluto and the Solar System | IAU Here are links that talk about how Pluto might have one of them subsurface oceans. Pluto has likely maintained an underground liquid ocean for billions of years Liquid water may have erupted from Pluto's icy volcanoes, study finds Pluto Might Have a Liquid Water Ocean?! Here are a couple of things on Pluto’s giant icy heart. New Horizons Spacecraft Displays Pluto’s Big Heart And here’s a quick article on Pluto’s oddball orbit. Pluto’s Orbit is Surprisingly Close to an Unstable Zone