In Final Fantasy IV, there are two moons, one of which is the Red Moon, is an important location. It is actually a planet near the Moon, and home to the Lunarians, the race to which Kluya, father of Cecil and Golbez, belongs. Cecil, after losing all the Crystals to Golbez, goes into the Moon via the Lunar Whale - a ship made by Kluya - that allows one to travel through space. The Red Moon is also home to the God of Eidolons, Bahamut, and the Hummingway tribe.
Is this the same moon that we see in Eorza? And why does this Red Moon getting bigger bring on Moon Mice and Moon Jewelery?