New Horizons Challenge:
Primary: Build a replica of the New Horizons, Voyager, or Pioneer extrasolar probes.
Secondary: Launch your replica on a hyperbolictrajectory. Achieve Kerbolar escape velocity!
Jeb: Your extrasolar probe must take advantage of a Jool gravity assist.
Val: After the Jool gravity assist, flyby Eeloo on your way out of the Kerbolar system.