Our Very Normal Solar System Isn't Normal Anymore
Wednesday, May 8, 2013 - 07:40
in Astronomy & Space
They said when a planetary system forms, the dust that's closer in, on the hot side of that line, melts into rocky minerals, forming solid balls, like Earth and Mars. But farther out, on the frosty side, the dust stays gassy, mostly hydrogen compounds, swelling to gigantic siz …