JUICE spacecraft encounters antenna deployment issue en route to Jupiter.

The 52-foot radar antenna on Juice, a Jupiter-bound spacecraft launched two weeks ago, has jammed and only unfolded one-third of the way following liftoff. Engineers suspect a tiny pin may be protruding and plan to fire the spacecraft’s engine in hopes of shaking the pin loose. The radar antenna is needed to peer beneath the icy crust of three Jupiter moons suspected of harboring underground oceans and possibly life, a major goal of the nearly $1.8 billion mission.