This .stl file was produced by scaling the original model and converting it directly to .stl format; it may not yet be ideal for printing. We welcome your feedback on your experience. After two decades in space, NASA's Cassini spacecraft is nearing the end of its remarkable journey of exploration. Having expended almost every bit of the rocket propellant it carried to Saturn, operators are deliberately plunging Cassini into the planet to ensure Saturn's moons will remain pristine for future exploration.