壮丽土星环将于2025年消失?NASA证实:全因这个!
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NASA确认,土星环2025年将因视觉差“消失”一段时间。(路透)
土星拥有太阳系行星中最突出且明显的行星环,然而这样的招牌竟然会在2025年消失?美国国家航空暨太空总署(NASA)近日证实,土星环2025年将因为视觉差“消失”一段时间,引发外界热议。
西元1610年,被誉为现代天文学之父的伽利略(Galileo
Galilei),利用当时具开创性,但相较于现代原始许多的望远镜,首次发现土星环。几个世纪后,现代人只要配备基本天文望远镜,就能欣赏到壮丽的土星环。然而有最新研究指出,这等天文景观将在18个月内,从地球人的视野中“消失”。
据《每日邮报》报导,目前土星环之于地球的倾斜角度为9度,预计明年会变成3.7度,NASA已确认,土星环可能会在2025年与地球几乎平行,因此从地球看向土星的位置,土星环如同一条细线,观星者难以辨别,就如同消失了一样,上一次发生这种罕见天文事件,是在2009年9月。
值得庆幸的是,这种现象只是暂时的,土星环还是会随著土星转动,向地球倾斜露出环面,预计2032年达最大倾斜度。
不过有天文研究显示,土星环并不会永远存在,而且有一天会消失!曾任NASA戈达德太空飞行中心研究员、现任职于日本宇宙航空研究开发机构的奥多诺霍(James
O’Donoghue)博士就表示,主要由水冰颗粒、太空尘埃组成的土星环,在重力和磁场的影响下,正如雨水般被吸入土星内,推估数亿年后土星环会消解,彻底成为土星的一部分。
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