. . . . "Fortress of the six moons" . "Fortress of the six moons"@en . "Fiction"@en . . . . . . . . . . "Science fiction, German"@en . . . . "Perry Rhodan, head of the New Power, has succeeded in capturing an alian space battleship and has driven a hostile alien race from the Vega system. The aliens, however, erect a fortress at the edge of the system, which Rhodan procedes to attack."@en . . .