Luna, The Moon
The Earth's Moon has been aroung for a long time. Its been called many things like Luna, Selene, and Artimis. The Moon is 348,000 kilometers away from Earth. Due to its size and composition it's sometimes labeled as a terrestrial "planet" like Mercury, Venus, Earth, and Mars. It has no asthmosphere and is made up of rocks. The rocks on the Moon are somewhere around 3 billion years old. The Moon's rotation period around the Earth is 29.5 Earth days. The mass of the Moon is 7.35*10^22. There really is no dark side to the Moon all parts of the Moon get sunlight half of the time.