Hubble Wide Field and Planetary Camera 2 mosaic of crater Copernicus. 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. Hubble can resolve features as small as 600 feet across in the terraced walls of the crater, and the hummock-like blanket of material blasted out by the meteor impact.

Credit: John Caldwell (York University, Ontario), Alex Storrs (STScI), and NASA