space hazards

Zoom-in on Epimetheus

Zoom-in on Epimetheus

This zoomed-in view of Epimetheus, one of the highest resolution ever taken, shows a surface covered in craters, vivid reminders of the hazards of space.Epimetheus (70 miles or 113 kilometers across) is too small for its gravity to hold onto an atmosphere.  It is also too small to be geologically active.  There is therefore no way to erase the scars from meteor impacts, except for the generation of new impact craters on top of old ones.