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  1. Hace 1 día · History Early observations Detail of Galileo's drawing of Saturn in a letter to Belisario Vinta (1610). Galileo Galilei was the first to observe the rings of Saturn in 1610 using his telescope, but was unable to identify them as such. He wrote to the Duke of Tuscany that "The planet Saturn is not alone, but is composed of three, which almost touch one another and never move nor change with ...