A 'runaway star' could save Earth from extinction a billion years from now. Here's how.
When you purchase through liaison on our internet site , we may bring in an affiliate commission . Here ’s how it works . About a billion years from now , the sunwill have become much big , bright and hotter , likely leave Earth uninhabitable . However , a prospect encounter with a passing star could save our planet by tossing it into a cooler orbit or facilitate it break barren of thesolar systementirely , a new theoretical sketch suggests ....