Wen das Thema "K?rperloses Beobachten der Vergangenheit und Gegenwart" interessiert, dem empfehle ich das Buch "Das Licht ferner Tage" vom Altmeister Arthur C. Clarke!
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Crichton: See that one, the bright one. It's my point of reference, my guide, and it always becomes the center of my chart. I always name it Aeryn...
Aeryn: You say it's your guide?
John: It's my one constant...