The Cassini spacecraft looks toward the Rhea's cratered, icy landscape with the dark line of Saturn's ringplane and the planet's murky atmosphere as a background. Rhea is Saturn's second-largest moon, ...
Across the span of 1671 through 1684, Italian-French astronomer Giovanni Cassini discovered four moons of Saturn while working under the patronage of King Louis XIV. Cassini collectively named the ...
Add Yahoo as a preferred source to see more of our stories on Google. On Dec. 23, 1672, Italian astronomer Giovanni Cassini discovered Rhea, Saturn’s second-largest moon. Rhea is made up of rock and ...
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