Due to this limitation, you may experience unexpected results within this site. The size, speed, and angle at which an asteroid or comet hits determines the type of crater that forms. Rebounding debris from the impact forms a central mound.
Material falls back into the crater forming terraces along the inner wall.
The final crater in this example is similar to the complex crater Tycho found in the moon's southern quadrant. Employment Copyright 1996-2001 Kalmbach Publishing Co.