Scientists find possible hint of dark matter

GENEVA (AP) — It is one of the cosmos’ most mysterious unsolved cases: dark matter. It is supposedly what holds the universe together. We can’t see it, but scientists are pretty sure it’s out there.

Led by a dogged, Nobel Prize-winning gumshoe who has spent 18 years on the case, scientists put a $2 billion detector aboard the International Space Station to try to track down the stuff. And after two years, the first evidence came in Wednesday: tantalizing cosmic footprints that seem to have been left by dark matter.