The eldila (singular eldil) are a species of intelligent extraterrestrials. The human characters in the trilogy encounter them on various planets, but the eldila themselves are native to interplanetary and interstellar space ("Deep Heaven"). In standard science-fiction terms, they are "multi-dimensional energy beings." They are barely visible as faint, shifting light.Certain very powerful eldila, the Oyéresu (singular Oyarsa), control the course of nature on each of the planets of the Solar System (note the similarity to the Valar, or the higher angels, in The Silmarillion). They (and maybe all the eldila) can manifest in forms other than faint light.The eldila are science-fictionalized depictions of angels, immortal and holy, with the Oyéresu perhaps being angels of a higher order (possibly in the traditional Hierarchy of angels). The eldila resident on (actually, imprisoned in) Earth are "dark eldila", fallen angels or demons. The Oyarsa of Earth, the "Bent One", is Satan. Ransom later meets the Oyéresu of both Mars and Venus, who are described as being masculine (but not actually male) and feminine (but not actually female), respectively. [ - ]

The eldila (singular eldil) are a species of intelligent extraterrestrials. The human characters... [ + ]