SPACE: Does the Sun Have a Long-Lost Twin?
The most distant region of our solar system, a sphere of dark, icy debris out beyond Neptune, is too crowded. All that stuff out there, beyond the reach of the ancient disk of gas and dust that formed the planets, doesn’t match with scientific models of how the solar system formed. Now, a pair of researchers has offered a new take on this far-out mystery: Our sun has a long-lost twin. And the two stars spent their childhoods collecting the passing debris from interstellar space, crowding the outer reaches of the solar system. We can’t see this twin. Wherever it … Read more