Expansion to the space exploration game HIGH FRONTIER, adds an extension to the map that includes Jupiter, Saturn, main belt comets, centaurs, and Trojan asteroids. The expanded rules include slingshots, radiation belts, piracy, combat, solar flares, and space politics and governments. There are also 24 new patent cards, representing reactors, generators, and radiators and an additional thruster. The expanded scenarios include alien invasions, the solitaire game, and two short games.