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Tag: Christmas

Five Golden Rings . . .

Christiaan Huygens, Systema Saturnium; sive, De Causis Mirandorum Saturni Phænomenôn, et Comite ejus Planeta Nova [Saturnian system], 1659, Schematic of Saturn's rings From digital collection, Christiaan Huygens Systema Saturnium —Elizabeth more »