I remember when that movie came out for the first time on the big screen. I was about 14 then. It was one of the best big screen movies I had seen up to that time. I watched it in Huntsville, AL where my brother worked for NASA...and that made the movie even more believable, because he thought it was good too!!!
It probably gave the NASA people something to think about, because they don't know what's out there, and take things like that seriously.
Les