Europa Clipper will face a challenge once it reaches the planet's moon — exposure to radiation, since the moon is within Jupiter’s magnetic field. To combat this, the spacecraft's electronics ...

With the Europa Clipper now on its 1.8-billion mile, 5½-year journey to the solar system’s largest planet, NASA has officially retired a “tremendous amount of risk on the mission ...

One of Jupiter’s 95 known moons, Europa is almost the size of our own moon. It’s encased in an ice sheet estimated to be 10 miles to 15 miles or more (15 kilometers to 24 kilometers) thick.

One of those days will bring it close to Europa, among 95 known moons at Jupiter and close to our own moon in size. WATCH: Poet Laureate Ada Limón reads poem being sent to space on NASA’s ...

The mission lifted off at 12:06 p.m. ET amid favorable weather conditions for the Europa Clipper to begin its six-year journey to Jupiter's icy moon Europa.

One of Jupiter’s 95 known moons, Europa is almost the size of our own moon. It’s encased in an ice sheet estimated to be 10 miles to 15 miles or more (15 kilometers to 24 kilometers) thick.

One of Jupiter’s 95 known moons, Europa, is almost the size of our own moon. It's encased in an ice sheet estimated to be 10 miles to 15 miles or more (15 kilometers to 24 kilometers) thick.

One of Jupiter’s 95 known moons, Europa is almost the size of our own moon. It’s encased in an ice sheet estimated to be 10 miles to 15 miles or more (15 kilometers to 24 kilometers) thick.

One of Jupiter’s 95 known moons, Europa is almost the size of our own moon. It's encased in an ice sheet estimated to be 10 miles to 15 miles or more thick. Scientists believe this frozen crust ...

NASA's Europa Clipper spacecraft launched from Florida's Kennedy Space Center on a nearly six-year mission to Jupiter to see if it's possible to sustain life that far into space.

On Oct. 14, NASA's Europa Clipper spacecraft began a vital mission. It will be investigating the potential habitability of Jupiter's icy ocean moon Europa — but first, it has to get there.