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Description
Several hundred colored balls try to orbit the green bubble. They shrink up over the poles where there's less room, because it's cold out there! There's a theorem that you can't have a flow on a sphere without any weird points, like swirls or collisions.

Description
Several hundred colored balls try to orbit the green bubble. They shrink up over the poles where there's less room, because it's cold out there! There's a theorem that you can't have a flow on a sphere without any weird points, like swirls or collisions.