It is a multi-national effort:
"The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. JPL manages the project for NASA's Science Mission Directorate in Washington. The Cassini orbiter was designed, developed and assembled at JPL".(Cassini, NASA). We have covered some of the mind boggling, beautiful, mysterious, and even uncanny developments during the years of the mission.
Space travel, competent space travel that is, is a must it seems for the survival of the human species.
Competent space travel means we lose the loser rocket science we use today, and develop a new physics for new technology to replace this ancient form of propulsion.
One major accomplishment, here on earth, of the mission is that nations worked together to improve our global understanding of our solar system.