Phasers - Guide to the weapons of Star Trek, for the Federation and Alien races.
Science of Star Trek - NASA physicist answers the question: Could people really do the fantastic things they do on the original Star Trek and Next Generation programmes, or is it all just hi-tech fantasy for people who can't face reality?
The Particles of Star Trek - Real-life science explanations of positrons, tritanium, and other components of Star Trek technology.