Saturn moon Epimetheus casts a shadow across colorful rings in this image taken by NASA Cassini spacecraft before the planet August 2009 equinox. Epimetheus is visible as a small dot at the center of the bottom of the image.
Saturn moon Epimetheus casts a shadow across colorful rings in this image taken by NASA Cassini spacecraft before the planet August 2009 equinox. Epimetheus is visible as a small dot at the center of the bottom of the image.