Reasons on why it was real. 1: the gravity, how can you simulate that on Earth. 2: shadows, you can try yet fail to replicate it. 3: "It WaS cGi!!!!!!" No, the f**k it wasn't. CGI wasn't even a thing until the 90's, you f**king 6 day old dog turd. So think before you type away with your gremlin fingers, you burst condom.