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Amalthea in Greek mythology, the she-goat who suckled the infant Zeus when he was hidden to protect him from his father Cronus; Amalthea's horn is another name for the cornucopia or horn of plenty.

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Amalthea (Jupiter V) The jovian satellite with the closest orbit to Jupiter. Its surface colour is reddish, apparently because of sulphur emitted from Io. Its diameter is 189 km (262 × 146 × 134 km), the irregular shape suggesting a rigid body. Its mass is 7.17 × 1018 kg; mean distance from Jupiter 181 000 km. It radiates more heat than it receives from the Sun.

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