Because of a loss of orbital energy to gravity from the Earth, the Moon is very gradually moving away from the planet. In the very early history of the planet, it looked about 3 times larger in apparent size in the sky, because it was closer to it. It is the only celestial body other than our planet on which humans have set foot. Without an atmosphere, there is no wind or water erosion. Its surface is about the same now as it was 3 billion years ago. The astronauts' footprints remain unchanged on its surface, and, they should last at least 10 million years. Get these beautiful wallpapers, and, enjoy the exquisite moonlight pictures on your phone.