Sorry if this is in the wrong part of the forum but I am a budding SciFi authro with many ideas. And I just wanted to check if one of my ideas is possible, and if not, how this effect could be best recreated. I'm sure everyone has seen the Star Wars movies. Well if you remeber Star Wars Episode V (the second released), the characters go to a planet that is seemingly made entirely out of sky. So my vision is a planet much like this. I envision nothing but sky and clouds, but is a planet made of sky and clouds possible? Or is it possible to have such a small core that is so dense that it produces enough gravity to maintain this atmosphere. And would it be possible to have water (in the form of clouds) on this planet?