灯火辉煌的城市，光影交错。在欣赏现代科技带来的炫目夜景时，我们是否意识到——用光线填满的黑夜，已遮蔽了深邃苍穹那点点繁星?
Youmaythinkthatlightpollutionisn’tsomethingextraordinarilyimportant. Youmaybelievethateveryothertypeofpollutionhasalargerimpactontheenvironmentthanlightpollutiondoes. Youmaynotevenhaveheardofitbefore. Itmaynotbepollutingourlakes, ourairortheEarth’slivingcreatures, butlightpollutionisserious, anditneedstobeaddressedbyeveryone.
Lightpollution, or “skyglow”, istheglowyoucanseeatnightabovecitiesandtowns. Lightpollutionisaproblemthathasbeenaccompanyingmaneversincehestartedhisfirstfiresome 15,000 yearsago, andtechnologyhasonlymadeitworse. Lightpollutionisthestraylightthatcomesfromstreetlights, billboardsigns, buildings, parkinglots, sportsarenasandanyothersourceofilluminationthatisreflectedordirectedintotheatmosphere. Lightpollutionismadeworsewithairpollution, asthesmallparticlesthatfloatintheairservetoscatterandreflectthelight,compoundingtheproblem. Theeffectoflightpollutionistoreducethecontrast, andthereforethevisibilityofdimmerobjectsinthenightsky, whichaffectsprofessional, aswellasamateurastronomers. Lightpollutionhasobscuredourviewofconstellations, meteorshowers, andeventheplanets.
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