Rocks in the Ice Giants? Uranus and Neptune May Be More Rocky Than Thought

A new Astronomy & Astrophysics study models Uranus and Neptune and finds their outer shells may be composed largely of rocks rather than being purely icy, implying their atmospheres could be littered with rocky material and suggesting a possible reclassification from “ice giants” to a term like “minor giants,” though the authors caution this isn’t definitive.