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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)??，看?(kan)上??(shang)去??(qu)美?(mei)麗?(li)的??(de)土??(tu)星??(xing)光??(guang)環(huán)??(huan)??，實??(shi)際??(ji)上??(shang)是??(shi)由?(you)無??(wu)數(shù)??(shu)水??(shui)冰??(bing)顆??(ke)粒??(li)、巖??(yan)石??(shi)碎??(sui)片??(pian)和??(he)塵??(chen)埃??(ai)構(gòu)??(gou)成??(cheng)??，規(guī)??(gui)模?(mo)超??(chao)級??(ji)龐??(pang)大??(da)??，但??(dan)是??(shi)厚??(hou)度??(du)有??(you)的??(de)地??(di)方??(fang)是??(shi)摩??(mo)天??(tian)大??(da)樓??(lou)??，有??(you)的??(de)地??(di)方??(fang)卻??(que)只??(zhi)有?(you)平??(ping)房??(fang)那??(na)么??(me)高??(gao)??，平??(ping)均??(jun)下??(xia)來??(lai)也??(ye)就??(jiu)十??(shi)多??(duo)米??(mi)??。?　　明??(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(shù)??(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)的祝(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)？??。