The Moon
The Moon is Earth’s only natural satellite—a rocky, cratered body about one‑quarter the diameter of Earth, orbiting at an average distance of approximately 384,400 km. It influences tides, stabilizes Earth’s axial tilt, and was formed about 4.5 billion years ago following a collision between Earth and a Mars-sized object.
Source: science.nasa.gov
APODs including "The Moon"
An Apollo 17 Panorama
28/01/2002
What would it be like to stand on the surface of another world, to look all around you, and to try to figure out how this world got there? To get an idea, scroll right. In 1972 during the Apollo 17 mission, astronauts Harrison Schmitt and Eugene Cernan found out first hand. In this case, the world was Earth's own Moon. In one of the more famous panoramas taken on the Moon, the magnificent desolation of the barren Moon is apparent. Visible are rocks, hills, craters, the lunar rover, and astronaut Schmitt preparing to take a soil sample. A few days after this image was taken, humanity left the Moon and has yet to return. An interactive version of the above image can be found here.