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How It’s Made: Why Auroras Have Different Colors
Aurora colors are “manufactured” by the atmosphere itself. Solar wind funnels down Earth’s magnetic field and energizes particles in the auroral oval. When these particles collide with atmospheric gases, excited atoms/molecules emit specific wavelengths as they relax: Oxygen @ ~557.7 nm (green) around 100–150 km; Oxygen @ 630.0 nm (red ...
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National Geographic Science on Instagram: "Whether you’re watching the aurora borealis in the north or the aurora australis in the south, you’re seeing the same spectacle, caused by the solar wind hitting the Earth's magnetic field and producing currents of ions. Those ions collide with gas atoms in the atmosphere, creating extra energy that's released as photons. The result? Beautiful, cascading bands of light in the sky. #HostilePlanet is now streaming on @DisneyPlus."
0:55
National Geographic Science on Instagram: "Whether you’re watching the aurora borealis in the north or the aurora australis in the south, you’re seeing the same spectacle, caused by the solar wind hitting the Earth's magnetic field and producing currents of ions. Those ions collide with gas atoms in the atmosphere, creating extra energy that's released as photons. The result? Beautiful, cascading bands of light in the sky. #HostilePlanet is now streaming on @DisneyPlus."
Instagramnatgeoscience
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