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學習快評丨qibao666888　　北??(bei)京??(jing)天??(tian)文??(wen)館??(guan)的??(de)科??(ke)普??(pu)專??(zhuan)家??(jia)介??(jie)紹??(shao)??，土??(tu)星??(xing)環(huán)?(huan)完??(wan)全??(quan)側??(ce)對??(dui)地??(di)球??(qiu)時??(shi)??，是??(shi)天??(tian)文??(wen)學??(xue)家??(jia)獲??(huo)得?(de)研?(yan)究??(jiu)環(huán)??(huan)系??(xi)三??(san)維??(wei)結?(jie)構??(gou)的??(de)絕?(jue)佳??(jia)機??(ji)會??(hui)??。??微??(wei)弱??(ruo)的??(de)光??(guang)影??(ying)變??(bian)化??(hua)可??(ke)能??(neng)揭?(jie)示??(shi)土??(tu)星??(xing)環(huán)??(huan)塵??(chen)埃??(ai)分??(fen)布??(bu)的??(de)異??(yi)常??(chang)??，這??(zhe)種??(zhong)特?(te)殊??(shu)視??(shi)角??(jiao)帶??(dai)來??(lai)的??(de)觀??(guan)測??(ce)窗??(chuang)口??(kou)??，就??(jiu)像??(xiang)為??(wei)宇??(yu)宙??(zhou)CT掃??(sao)描??(miao)打??(da)開??(kai)了??(le)最??(zui)佳??(jia)角??(jiao)度??(du)???！　∶??(ming)天??(tian)(24日??(ri))凌??(ling)晨??(chen)??，太?(tai)陽??(yang)系??(xi)八??(ba)大??(da)行??(xing)星??(xing)之??(zhi)一??(yi)的??(de)土??(tu)星??(xing)??，將??(jiang)上??(shang)演??(yan)神??(shen)奇??(qi)的??(de)光??(guang)環(huán)??(huan)“消?(xiao)失??(shi)術??(shu)”??。??我??(wo)們??(men)原??(yuan)來??(lai)看??(kan)到??(dao)的?(de)土??(tu)星??(xing)??，周??(zhou)圍??(wei)有??(you)一??(yi)圈??(quan)漂??(piao)亮??(liang)的??(de)光??(guang)環(huán)??(huan)??，所??(suo)以??(yi)它??(ta)也??(ye)被??(bei)稱??(cheng)為??(wei)“指??(zhi)環(huán)??(huan)王??(wang)”或??(huo)者??(zhe)是??(shi)“草??(cao)帽??(mao)星??(xing)”??。但??(dan)明??(ming)天?(tian)凌??(ling)晨??(chen)??，這??(zhe)個??(ge)光??(guang)環(huán)?(huan)在??(zai)地??(di)球?(qiu)觀??(guan)測?(ce)者??(zhe)的?(de)視?(shi)野??(ye)中??(zhong)就??(jiu)要??(yao)“消??(xiao)失??(shi)”了?(le)??，這??(zhe)是??(shi)怎??(zen)么??(me)回??(hui)事??(shi)呢??(ne)？??。