A crucial radar antenna on a spacecraft bound for Jupiter is no longer jammed. Flight controllers in Germany freed the antenna Friday after nearly a month of effort. The Juice spacecraft blasted off in April on a decade-long voyage to Jupiter and its icy moons. A tiny pin refused to budge and prevented the antenna from fully opening. Controllers tried shaking and warming the spacecraft, but back-to-back jolts finally did the trick. The radar antenna will peer miles beneath the icy crust of three Jupiter moons suspected of harboring underground oceans and possibly life.
