Home▸Space & Astronomy▸11 Aurora Borealis

Aurora Borealis Curtain Simulator (2D)

2D ground-view aurora simulator: tune solar wind speed, particle density and the Kp geomagnetic index and watch the curtain's altitude-dependent colour respond in real time — green 557.7nm oxygen, red 630nm oxygen, blue-violet 427.8nm nitrogen.

Space & Astronomy2DEasy60 FPS📱 Mobile-adapted⇄ 3D version

The 3D version shows the northern lights as a rippling curtain over a mountain skyline. This 2D companion opens up the physics behind that colour: solar wind speed and density set how much energy gets dumped into the upper atmosphere, the Kp geomagnetic index expands the auroral oval and raises particle energy, and the precipitation altitude decides which atomic transition dominates — green 557.7 nm oxygen, red 630.0 nm oxygen, or blue-violet 427.8 nm nitrogen. Move the sliders and watch the ground-view curtain repaint itself in real time along with the live readouts.

⚙ Under the hood

2D ground-view aurora curtain simulator with solar wind speed, particle density, Kp index and altitude/gas-mix controls that drive real oxygen and nitrogen emission-line colours.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install