C.S. Lewis’s 1943 science-fiction novel set partly on Venus is Perelandra.
Perelandra is the second novel in Lewis’s Space Trilogy, following Out of the Silent Planet and preceding That Hideous Strength. Its protagonist, the Cambridge academic Elwin Ransom, travels to the planet Venus, called Perelandra in the novel. There he encounters a newly created world and a conflict involving temptation, innocence, and evil.
The book combines planetary adventure with theological and philosophical ideas. Lewis was interested in medieval cosmology, Christian doctrines of creation and fall, and the imaginative possibilities of travel beyond Earth. The Venus of Perelandra is not a realistic portrait of the planet as modern astronomy understands it; it is a literary world designed for mythic and theological purposes.
The trilogy is sometimes called the Ransom Trilogy because Ransom appears in all three books. The first novel takes place largely on Mars, while the third shifts much of its action back to Earth.