Although not the unique cause, dust originating from Saturn's irregular satellites was later found in data from the Cassini spacecraft to indeed play a crucial role in the coloration of Iapetus.
Meski bukan kasus pertama, debu yang berasal dari satelit ireguler Saturnus juga ditemukan di dalam data wahana antariksa Casini dan terbukti memainkan peran penting dalam pewarnaan Iapetus.