Hans Henrik WöhlerNarrator Antonio Rosas GonzalezSelf Tullis OnstottSelf - Astrobiologe Mike GoldSelf - Bigelow Aerospace Felisa Wolfe-SimonSelf - Astrobiologin Jürgen MüllerSelf - Hydrologe Christian LuxSelf - Forstingenieur Heino PolleySelf - Leiter der Bundeswaldinventur Nicolaus Graf von HatzfeldtSelf - Waldbesitzer Andreas FlorenSelf - Baumkronen-Forscher Franz StraubingerSelf - Forstdirektor Hatzfeldtsche Wälder Marion Dornmayr-PfaffenhuemerSelf - Mikrobiologin Stephen AttenboroughSelf - Virgin Galactic Tom ShelleySelf - Space Adventures Peer GehrmannSelf - Talis Enterprise Rupert GerzerSelf - Weltraummediziner Helga Stan-LotterSelf - Mikrobiologin Gerhard KminekSelf - Physiker John CryanSelf - University College Cork Stefan Schulze-HausmannHost (1991-1999) Holger DouglasDirector / Writer Rita Knobel-UlrichDirector / Writer John A. KantaraDirector / Writer Klaus KastenholzDirector / Writer Max MönchDirector / Writer Bernd ReufelsDirector / Writer Susanne RostoskyDirector / Writer Gregor StreiberDirector / Writer / Producer Cosima Maria DeglerProducer Miriam WeinandiProducer / Editor Sven KiescheCinematographer Klaus BernhardtCinematographer Robert CöllenCinematographer Tiemo FennerCinematographer André GötzmannCinematographer Julia HönemannCinematographer Christine AufderhaarComposer Katharina FingerProducer: 3Sat Catrin PowellProducer: 3Sat 