Stories

SaveSave story

Why Earth might have had two suns at one point

NASA/JPL-Caltech/UCLA

There is new evidence to support the hypothesis that all stars are "born" with at least one "sibling" — including our sun.

Why it matters: "Our work is a step forward in understanding both how binaries form and also the role that binaries play in early stellar evolution," said UC Berkeley astronomer Steven Stahler.