Here NASA's Hubble Space Telescope took a look at Earth's closest neighbor in space, the Moon. Hubble was aimed at one of the Moon's most dramatic and photogenic targets, the 58 mile-wide (93 km) impact crater Copernicus. (Upper left) The Moon is so close to Earth that Hubble would need to take a mosaic of 130 pictures to cover the entire disk. This ground-based picture from the Lick Observatory on Earth shows the area covered in Hubble's photomosaic with the Wide Field Planetary Camera 2. (Center) Hubble's crisp bird's-eye view clearly shows the ray pattern of bright dust ejected out of the crater over 1 billion years ago, when an asteroid larger than a mile across slammed into the Moon.