每日星相:Daily Astronomy(5)
Sometimesit'snightonthegroundbutdayintheair.AstheEarthrotatestoeclipsetheSun,sunsetrisesupfromtheground.Therefore,atsunsetontheground,sunlightstillshinesoncloudsabove.Underusualcircumstances,aprettys...
Sometimesit'snightonthegroundbutdayintheair.AstheEarthrotatestoeclipsetheSun,sunsetrisesupfromtheground.Therefore,atsunsetontheground,sunlightstillshinesoncloudsabove.Underusualcircumstances,aprettys...