What fictional planet is home to Ransom in C.S. Lewis's Space Trilogy?

Malacandra is the fictional planet home to Ransom in C.S. Lewis's Space Trilogy. In the first novel, Out of the Silent Planet, the planet is also identified with Mars in the story's imagined planetary system.

Ransom, an English philologist, is abducted and taken to Malacandra by spacecraft. There he encounters intelligent species and learns that Earth is known as Thulcandra, the silent or isolated planet. The novel uses interplanetary adventure to explore language, morality, colonialism, and humanity's relationship with other forms of life.

The trilogy continues with Perelandra, set on the planet Lewis associates with Venus, and That Hideous Strength, which returns largely to Earth. Malacandra is therefore not the name of the entire trilogy's setting and is not interchangeable with Perelandra, despite the similar names.