Super-Earths Form in Super Snowstorms

The 200 known planets that orbit other stars exhibit incredible variety. Among them are a handful of worlds that weigh between 5 and 15 times Earth. Astronomers believe these “super-Earths” are rocky iceballs rather than gas giants like Jupiter. While theorists can explain how such worlds form around Sun-like stars…….

read more | digg story

Advertisements

%d bloggers like this: