One of the ideas that C. S. Lewis was trying to present in these novels is that the word "space" is wrong, charged with the notion of emptiness, and that it should be thought of as ''heaven.'' Earth, which in these books is called Thulcandra, "the silent planet," is under the influence of evil. It has been sealed off from the rest of the universe to prevent it from infecting the rest. In Perelandra, Lewis refers to "the vast astronomic distances which are God's quarantine regulations." Lewis appears to be suggesting that God intends for humans to remain confined to the Earth, and that human attempts to travel between the planets are blasphemous. | One of the ideas that C. S. Lewis was trying to present in these novels is that the word "space" is wrong, charged with the notion of emptiness, and that it should be thought of as ''heaven.'' Earth, which in these books is called Thulcandra, "the silent planet," is under the influence of evil. It has been sealed off from the rest of the universe to prevent it from infecting the rest. In Perelandra, Lewis refers to "the vast astronomic distances which are God's quarantine regulations." Lewis appears to be suggesting that God intends for humans to remain confined to the Earth, and that human attempts to travel between the planets are blasphemous. |