History
Ydreya is a planet in the Gemini Binary Star System, and because it was placed between two suns its inhabitants, the Ydreyans, were plagued by eternal daylight. Within the Ydreyan race there was a lineage of Darkforce users who manifested darkness to partially cover the planet and grant the civilization nighttime. However, after the latest member of this lineage, Aranthalla, lost control of his powers for some reason and perished, leaving the Silver Surfer to use his powers in moving the nearby asteroids to form a solar cover that covered half of the planet from the sunlight. This granted Ydreya a natural day and night cycle, and ensured the survival of the Ydreyans.[1]