Aurora Observation Array (2D)

This 2D companion replaces the 3D scene's decorative domes and wind turbines with a formula-driven aurora model: the interplanetary merging electric field and solar-wind dynamic pressure are computed from real E = v×B and ram-pressure formulas, an approximate Kp index and auroral-oval equatorward boundary follow from that coupling, and the precipitating-electron energy sets both the collision altitude and the emission colour of the curtain — so pushing Bz south or the wind faster visibly brightens, lowers and reddens-to-greens the aurora while pulling its oval down toward whatever observing latitude you set.