I had no decent ideas of my own, so I used one of the examples provided in the challenge.
This is a flag of a Tuareg nation on Mercury, combining a stylized Tuareg cross amulet with the astronomical symbol for Mercury. Surrounding this symbol is a circle, representing the planet itself, with the rays behind/around it symbolizing Mercury's proximity to the Sun. The colors are a reversal of the ones used on the proposals for various Tuareg and Berber flags. Tuareg crosses are generally supposed to be silver, so I couldn't very well make it blue.
This is a flag of a Tuareg nation on Mercury, combining a stylized Tuareg cross amulet with the astronomical symbol for Mercury. Surrounding this symbol is a circle, representing the planet itself, with the rays behind/around it symbolizing Mercury's proximity to the Sun. The colors are a reversal of the ones used on the proposals for various Tuareg and Berber flags. Tuareg crosses are generally supposed to be silver, so I couldn't very well make it blue.
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