A NASA spacecraft is ready to set sail for Jupiter and its moon Europa, one of the best bets for finding life beyond Earth. Europa Clipper will peer beneath the moon’s icy crust where an ocean is thought to be sloshing fairly close to the surface.

All of that, plus fuel, means the spacecraft tips the scales at approximately 13,000 lbs., which requires a bruiser of a rocket to muscle it off the ground. Europa Clipper will get that rocket, in the form of the 27-engine SpaceX Falcon Heavy, with over 5 million lbs. of thrust, able to launch more than 37,000 lbs. on an interplanetary trajectory.