In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

How do you grow and evolve to fit into an alien environment? James S. A. Corey, the nom de plume of the duo behind the Hugo ...

Italian American physicist Enrico Fermi once asked, “if we live in an infinite universe with infinite capacity for life, why haven’t we seen any aliens?” This question is known as the Fermi Paradox – ...

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 ...

From infinite mazes to time jumps, there are plenty of thrilling and intimate hard science fiction books worth exploring.