Europa, one of the four large moons of Jupiter first seen by Galileo 414 years ago, may have a deep, salty, global ocean hidden beneath a thick crust of ice. NASA is poised to send a jumbo robotic probe to see if the icy moon has the key characteristics of a habitable world. wapo.st/401BjJb

Can an icy Jupiter moon sustain life? NASA’s biggest space probe will investigate.

NASA is set to launch a jumbo spacecraft, Europa Clipper, to see if an icy moon of Jupiter has the characteristics of a habitable world.