Future of Earth Sun. The drag from the solar atmosphere may cause the orbit of the Moon to decay. Once the orbit of the Moon closes to a distance of , it will cross the Earth's Roche limit. This means that tidal interaction with the Earth would break apart the Moon, turning it into a ring system. Most of the orbiting ring will then begin to decay, and the debris will impact the Earth. Hence, even if the Earth is not swallowed up by the Sun, the planet may be left moonless. The ablation and vaporization caused by its fall on a decaying
Sun and Moon (Middle-earth) Sun. In the universe of Middle-earth, the Sun is generally regarded as feminine, in recognition of Arien. This gender corresponds with Sól (Sun), the personified in Germanic mythology. The Maia Tilion was chosen to guide the vessel of the Moon. Names of the Moon amongst the Elves included Isil or "The Sheen", a name given to it by the Vanyar; Ithil, the common name for the Moon in Sindarin, as seen in "Minas Ithil" (later Minas Morgul) and the Gondorian province of Ithilien; and Rána, or "The Wayward", a name given to the Moon by the Noldor. A poetic name