NASA launches a probe to find out if there really could be alien life on Jupiter’s moon Europa

The NASA mission, called Europa Clipper, aims to figure out whether the Jupiter moon and its ocean could support life. It’s the largest interplanetary spacecraft NASA has ever built. The probe is about 16 feet tall and, when its vast wings of solar arrays are deployed, 100 feet wide. It weighs three-and-a-half tons.

Clipper is undertaking the first targeted exploration of an ocean world beyond our planet.

Even if there is no life on Europa, this mission is crucial in the search for alien life, since ocean worlds across the galaxy are prime candidates for life.

Missions like Europa Clipper are “modern cathedrals” and “generational quests,” said Laurie Leshin, the director of NASA’s Jet Propulsion Laboratory, which built the spacecraft.

“Clipper is not actually going to look for life itself, but it’s going to characterize the habitability of Europa,” Gina DiBraccio, the acting director of NASA’s Planetary Science Division, said in the briefing.

The mission is designed to orbit Jupiter and fly past Europa 49 times, each time soaring over a different area to eventually cover almost the entire moon, pole to pole. The spacecraft will skim as close as 16 miles above Europa’s surface.

The mission plan is a marvel of engineering. Rather than a three-body problem, falling into orbit around Jupiter is a “seven-body problem” because of the planet’s large moons, Jordan Evans, the mission’s project manager, said in the briefing.

During each flyby, Clipper will bathe in radiation from Jupiter that’s equivalent to “a few million chest X-rays,” Evans added.

It might even find out if Europa’s ice really glows in the dark from that radiation, as NASA research has previously indicated.