Oct. 25, 1671: Cassini Spots a Two-Toned Saturnian Moon

The strange coloring of the oddly shaped satellite discovered by Giovanni Cassini continues to baffle astronomers to this day.

Source: http://www.wired.com/thisdayintech/2011/10/1025cassini-discovers-saturn-moon-iapetus/

FIDELITY NATIONAL INFORMATION SVCS FISERV GOOGLE