Star Trek is packed with all sorts of alien, both on the Enterprise and throughout the final frontier, and these are the strongest alien races of them all.

The conflict in the Mass Effect games between alien races the quarians and the geth drew inspiration from Battlestar Galactica. Here's how.

A violent, almost demonic alien race called the Furies first appeared in a series of Star Trek crossover novels published in 1996. Titled Star Trek: Invasion!, these four novels spanned the 23rd and ...