So have people talk about atmospheres, interiors, dynamics, and other processes that go on, on them - you know, on service processes, for instance, and then having discussed, you know, the things that we - the processes that we associate with these bodies to say, okay, now, can we - can we as a group articulate some definitions that would capture the essence of what we've been talking about?
NPR: Astronomers Prepare to Fight Pluto Demotion