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學(xué)習(xí)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)光秘(guang)環(huán)??(huan)??，實(shí)??(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)??。??　　北??(bei)京??(jing)天??(tian)文??(wen)館?(guan)科??(ke)普??(pu)教??(jiao)育??(yu)部??(bu)副?(fu)研??(yan)究??(jiu)館??(guan)員??(yuan)曹??(cao)軍??(jun)表??(biao)示??(shi)??，如??(ru)果?(guo)持??(chi)續(xù)??(xu)觀?(guan)察??(cha)土??(tu)星??(xing)??，會(huì)??(hui)發(fā)??(fa)現(xiàn)??(xian)光??(guang)環(huán)??(huan)朝??(chao)向??(xiang)地??(di)球??(qiu)的??(de)角??(jiao)度??(du)是??(shi)在??(zai)不??(bu)斷??(duan)變??(bian)化?(hua)的??(de)??，大??(da)概?(gai)十??(shi)幾??(ji)年??(nian)會(huì)?(hui)完??(wan)成??(cheng)一??(yi)個(gè)??(ge)輪??(lun)回??(hui)??。??今??(jin)年??(nian)3月??(yue)份??(fen)??，地??(di)球??(qiu)正??(zheng)好??(hao)在??(zai)光??(guang)環(huán)??(huan)的??(de)平??(ping)面??(mian)上??(shang)??，因??(yin)此??(ci)看??(kan)上??(shang)去??(qu)就?(jiu)好?(hao)像??(xiang)光??(guang)環(huán)??(huan)消??(xiao)失??(shi)了??(le)一??(yi)樣??(yang)??。。