Something I think some people miss about great science fiction is that it predicts some part of the future. No other theatrical movie that I can recall predicted that when the space shuttle went to study Halley's Comet that a disaster would occur! Some differences were: the "Churchill" (the shuttle in the movie) actually went to the comet, the "Challenger" was only in low earth orbit; The "Churchill" was merely burned out inside, whereas the "Challenger" exploded--hey the vampires had to get back to earth. One great similarity (and this is always bad luck!) both had mixed male/female crews--the legend of Halley's comet and disaster continues!
Other than this there is not much more to be said about this movie that hasn't been said before. As a outer space/science fiction/horror/sex film individually it provided nothing really new, but as in all great dishes it is the combination that counts. And taken together, this was a highly original and satisfying combination.
I just wish Mathilda May would drain her victims through another part of the body!