Earth referred to as "moons", after Earth's. The gravitational attraction between Earth and the Moon causes tides on Earth. The same effect on the Moon has led to its tidal locking: its rotation period is the same as the time it takes to orbit Earth. As a result, it always presents the same face to the planet. As the Moon orbits Earth, different parts of its face are illuminated by the Sun, leading to the lunar phases; the dark part of the face is separated from the light part by the solar terminator. Due to their tidal interaction, the Moon recedes
Dark Is the Sun from the neck and when held up to another belonging to a potential mate will sync in pattern and color to approve marriage. Many times through Earth's existence it faced its end, but each time this event occurred, humanity was at a high point in intelligence and was able to rescue Earth from annihilation. When the sun died, they ignited the moon, and later when the moon died, the Earth was moved to safety. But now Earth's death is approaching during a time when man's technological levels are at a low point. The story opens with Deyv being forced to