Saturn's rings were seen in 1610
1610年已观测到土星光环

In 1610, Galileo Galilei became the first person to observe Saturn's rings; however, he described them as "ears." It was not until 1655 that Christian Huygens was able to use his higher-quality telescope to become the first person to describe the feature as an actual ring surrounding Saturn. Finally, in 1675, Giovanni Cassini determined that Saturn's "ring" was actually composed of subrings with gaps between them.
1610年伽利略就已经是第一个观测到土星光环的人了，不过当时他把光环称之为“耳朵”。直到1655年，克里斯蒂安·惠更斯才使用更高倍的望远镜观察土星，并对土星光环的性质做了具体描述。最终，在1675年，意大利天文学家卡西尼才确定了土星光环是由子环和其间的空隙所构成的。