The astronomer Giovanni Cassini first spotted the moon in 1671, and years later figured out it has a dark side, now named Cassini Regio in his honor.

• 天文学家乔万尼卡西尼首次发现月球在1671年，和年后，计算出它有黑暗的一面，现名为卡西尼雷吉奥在他的荣誉。