Outer planets always gas planets?

selfAdjoint

Some of the light gasses escape, but much of it remains, in the outer regions of the forming cloud. That was the explanation for outer planets like Jupier, Saturn, Uranus and Neptune being gas giants. The other factor is the size of the cloud.

selfAdjoint Recognitions: Gold Member Staff Emeritus	Some of the light gasses escape, but much of it remains, in the outer regions of the forming cloud. That was the explanation for outer planets like Jupier, Saturn, Uranus and Neptune being gas giants. The other factor is the size of the cloud.