RT @ESA_History: #OTD 31 Dec 2004, #Iapetus seen by NASA/ESA/ASI #Cassini-Huygens @ closest approach w/reflected light from Saturn https://t.co/YW7zUc1FhC
RT @ESA_History: #OTD 31 Dec 2004, #Iapetus seen by NASA/ESA/ASI #Cassini-Huygens @ closest approach w/reflected light from Saturn https://t.co/YW7zUc1FhC