卡西尼号航天器是美国宇航局、欧洲航天局和意大利航天局的一个合作项目。2004年,卡西尼号成为首个环绕土星运行的航天器。当卡西尼号绕着土星旋转、沿着土星环舞蹈并与土星奇异的卫星擦身而过时,它收获了数量惊人的数据。2017年9月15日,卡西尼号坠入土星大气层的云顶。卡西尼号的作业虽然画上句号,但我们对其发现意义的理解或许才刚刚启程。 The Cassini spacecraft is a collaborative project between NASA, the European Space Agency and the Italian Space Agency. In 2004, Cassini became the first spacecraft to orbit Saturn. As the Cassini revolves around Saturn, dances along Saturn’s rings and passes the moon with Saturn’s singular satellites, it gains a staggering amount of data. On September 15, 2017, Cassini crashed into the cloud top of Saturn’s atmosphere. Although Cassini’s work ends with no end, our understanding of the significance of its discovery may have just begun.