The Space Ghosts is the sixth book in the Astrosaurs series, and it features the second appearance of General Loki the velociraptor, Teggs's oldest enemy. The cover art is of Teggs holding a dispium crystal and confronting two ghostly kentrosaurus. In The Space Ghosts, Teggs, Arx, Gipsy, and Iggy travel to the planet Creepus to help out a team of diplodocus miners who claim that they're being haunted by the kentrosaurus miners who used to own their camp, Camp Kentro. Teggs and his crew soon discover that the ghosts are real, and that all of them are unknowingly playing into the claws of a very old enemy...