Logo a day 079 - Callisto

Callisto is the second-largest moon of Jupiter, after Ganymede. Callisto was discovered by Galileo in January 1610. Humans might step foot there by 2040!
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Side note, I just discovered that you can export a png x2 the resolution. I've been making these 1000x1000, but 2000x2000 is so much better!