A Reader posted a review at 2009-08-08 09:15:03.
Although this is not Lewis' preferred genre, he turns his hand to Science Fiction very well, and flavours it with questions of philosophy and spirituality often missing from other sci-fi. Importantly, he almost completely ignores the 'science' aspect of the story, as this is not important to the plot, instead introduceing the concept of spirits and god-like creatures as active participants in a sci-fi world. He concentrates on higlighting the lack of contact humans have with other sentient species and the loneliness and arrogance that results.
Interestingly, the character of Ransom (a linguist by trade) is almost certainly based on J.R.R. Tolkien, who was a friend of C.S. Lewis.