The Space Trilogy. The Space Trilogy or Cosmic Trilogy is a series of science fiction novels by C. S. Lewis, famous for his later series The Chronicles of Narnia. A philologist named Elwin Ransom is the hero of the first two novels and an important character in the third.
C. S. Lewis, a well-known author and apologist, is best known by people of all ages for his seven volume series entitled The Chronicles of Narnia. As Lewis wrote about the land of Narnia, an imaginary world visited by children of this world, he had two obvious purposes: to entertain the readers and to suggest analogies of the Christian faith.