Typography in Science Fiction

Tsvete's futuristic typeface from the last assignment on typography got me thinking about typography in Science Fiction. It seems like a common marketing approach to use a unique typeface for the sake of branding, as seen in big Sci-Fi franchises like Star Wars or Star Trek.
What exactly makes a typeface look space age?
Linearity?
Beveled corners?
Slanted axes on characters?
Uber spacious kerning?
Disintegrating, acid-oozing letters?
A new publication, "Science Fiction Typography," examines this question through compiling header text on popular science fiction magazines from the 1930s - 1970s.