Polydeuces Flag Picture

Polydeuces is a very small natural satellite of Saturn that is co-orbital with Dione and librates around the trailing Lagrangian point (L5).
Polydeuces was discovered by the Cassini Imaging Team on October 24, 2004 and given the temporary designation S/2004 S 5. Of the four known Lagrangian co-orbitals in the Saturn system, Polydeuces wanders the farthest from its Lagrangian point.

The name Polydeuces was approved by the IAU Working Group on Planetary System Nomenclature on January 21, 2005. In Greek mythology, Polydeuces is another name for Pollux, twin brother of Castor, son of Zeus and Leda.

Castor & Pollux: were the Gemini (twin) brothers in Roman mythology, taken from Greek Mythology, where they are collectively known as the Dioskouroi. Their mother was Leda but they had different fathers, Sparta's King Tyndareus and the god Zeus, respectively. They were brothers to Helen of Troy and Clytemnestra, and the half-brothers of Timandra, Phoebe, Hercules, and Philonoe. They are known collectively in Greek as the "sons of Zeus" and in Latin as the Gemini.

In the myth, the twins shared the same mother but had different fathers (immortal Zeus and mortal Tyndareus), which meant that Pollux was immortal and Castor was mortal. When Castor was killed, Pollux asked Zeus to let him share his own immortality with his twin to keep them together and they were transformed into the Gemini constellation. The pair were regarded as the patrons of sailors, to whom they appeared as St. Elmo's fire.

That last paragraph is what gave me my clues to symbolism. Since I didn't have a twin, I decided to go for the sailor's part. St. Elmo's fire is an atmospheric purple discharge often seen off the masts of ships, that takes care of the purple fire emblem and the sailing ship in the corner. What great symbolism for a refueling stop for spacecraft looking for energy.
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