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A) Christiaan Huygens
B) Galileu Galilei
C) Nicolau Copérnico
D) Albert Einstein
E) Isaac Newton

Huygens
And I think Voyager 1 and 2 discovered the rest of the rings in other planets.

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Huygens actually made sense of Galilei's initial observation. Galilei thought they were 2 moons on either side of the planet...

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GG(not Gigi)

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