A NASA spacecraft has set sail for Jupiter and its moon Europa, one of the best bets for finding life beyond Earth.Watch video of the launch in the player above.Europa Clipper will peer beneath the moon바카라 게임 웹사이트�s icy crust where an ocean is thought to be sloshing fairly close to the surface. It won바카라 게임 웹사이트�t search for life, but rather determine whether conditions there could support it. Another mission would be needed to flush out any microorganisms lurking there.바카라 게임 웹사이트�It바카라 게임 웹사이트�s a chance for us to explore not a world that might have been habitable billions of years ago, but a world that might be habitable today 바카라 게임 웹사이트� right now,바카라 게임 웹사이트� said program scientist Curt Niebur.Its massive solar panels make Clipper the biggest craft built by NASA to investigate another planet. It will take 5 1/2 years to reach Jupiter and will sneak within 16 miles of Europa's surface 바카라 게임 웹사이트� considerably closer than any other spacecraft.Clipper lifted off Monday aboard SpaceX바카라 게임 웹사이트�s Falcon Heavy rocket from NASA바카라 게임 웹사이트�s Kennedy Space Center. Mission cost: $5.2 billion.Europa, the superstar among Jupiter바카라 게임 웹사이트�s many moonsOne of Jupiter바카라 게임 웹사이트�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 hides an ocean that could be 80 miles or more deep. The Hubble Space Telescope has spotted what appear to be geysers erupting from the surface. Discovered by Galileo in 1610, Europa is one of the four so-called Galilean moons of Jupiter, along with Ganymede, Io and Callisto. Seeking conditions that support lifeWhat type of life might Europa harbor? Besides water, organic compounds are needed for life as we know it, plus an energy source. In Europa바카라 게임 웹사이트�s case that could be thermal vents on the ocean floor. Deputy project scientist Bonnie Buratti imagines any life would be primitive like the bacterial life that originated in Earth바카라 게임 웹사이트�s deep ocean vents. 바카라 게임 웹사이트�We will not know from this mission because we can바카라 게임 웹사이트�t see that deep,바카라 게임 웹사이트� she said. Unlike missions to Mars where habitability is one of many questions, Clipper바카라 게임 웹사이트�s sole job is to establish whether the moon could support life in its ocean or possibly in any pockets of water in the ice. Supersized spacecraftWhen its solar wings and antennas are unfurled, Clipper is about the size of a basketball court 바카라 게임 웹사이트� more than 100 feet end to end 바카라 게임 웹사이트� and weighs nearly 13,000 pounds. The supersized solar panels are needed because of Jupiter바카라 게임 웹사이트�s distance from the sun. The main body 바카라 게임 웹사이트� about the size of a camper 바카라 게임 웹사이트� is packed with nine science instruments, including radar that will penetrate the ice, cameras that will map virtually the entire moon and tools to tease out the contents of Europa바카라 게임 웹사이트�s surface and tenuous atmosphere. The name hearkens to the swift sailing ships of centuries past.Circling Jupiter to fly by EuropaThe roundabout trip to Jupiter will span 1.8 billion miles. For extra oomph, the spacecraft will swing past Mars early next year and then Earth in late 2026. It arrives at Jupiter in 2030 and begins science work the next year. While orbiting Jupiter, it will cross paths with Europa 49 times. The mission ends in 2034 with a planned crash into Ganymede 바카라 게임 웹사이트� Jupiter바카라 게임 웹사이트�s biggest moon and the solar system's too.Europa flybys pose huge radiation riskThere바카라 게임 웹사이트�s more radiation around Jupiter than anywhere else in our solar system, besides the sun. Europa passes through Jupiter바카라 게임 웹사이트�s bands of radiation as it orbits the gas giant, making it especially menacing for spacecraft. That바카라 게임 웹사이트�s why Clipper바카라 게임 웹사이트�s electronics are inside a vault with dense aluminum and zinc walls. All this radiation would nix any life on Europa바카라 게임 웹사이트�s surface. But it could break down water molecules and, perhaps, release oxygen all the way down into the ocean that could possibly fuel sea life.Earlier this year, NASA was in a panic that the spacecraft's many transistors might not withstand the intense radiation. But after months of analysis, engineers concluded the mission could proceed as planned.Other visitors to Jupiter and EuropaNASA바카라 게임 웹사이트�s twin Pioneer spacecraft and then two Voyagers swept past Jupiter in the 1970s. The Voyagers provided the first detailed photos of Europa but from quite a distance. NASA바카라 게임 웹사이트�s Galileo spacecraft had repeated flybys of the moon during the 1990s, passing as close as 124 miles. Still in action around Jupiter, NASA바카라 게임 웹사이트�s Juno spacecraft has added to Europa바카라 게임 웹사이트�s photo album. Arriving at Jupiter a year after Clipper will be the European Space Agency바카라 게임 웹사이트�s Juice spacecraft, launched last year.Ganymede and other possible ocean worldsLike Europa, Jupiter바카라 게임 웹사이트�s jumbo moon Ganymede is thought to host an underground ocean. But its frozen shell is much thicker 바카라 게임 웹사이트� possibly 100 miles thick 바카라 게임 웹사이트� making it tougher to probe the environment below. Callisto바카라 게임 웹사이트�s ice sheet may be even thicker, possibly hiding an ocean. Saturn바카라 게임 웹사이트�s moon Enceladus has geysers shooting up, but it바카라 게임 웹사이트�s much farther than Jupiter. Ditto for Saturn바카라 게임 웹사이트�s moon Titan, also suspected of having a subterranean sea. While no ocean worlds have been confirmed beyond our solar system, scientists believe they바카라 게임 웹사이트�re out there 바카라 게임 웹사이트� and may even be relatively common.Messages in a cosmic bottleLike many robotic explorers before it, Clipper bears messages from Earth. Attached to the electronics vault is a triangular metal plate. On one side is a design labeled 바카라 게임 웹사이트�water words바카라 게임 웹사이트� with representations of the word for water in 104 languages. On the opposite side: a poem about the moon by U.S. poet laureate Ada Limon and a silicon chip containing the names of 2.6 million people who signed up to vicariously ride along.