Auroras form when electrons from space ride waves in Earth’s magnetic field
The same physics could give rise to auroras on Jupiter and Saturn
![night sky with green glow](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/06/060721_MT_aurora_feat.jpg?fit=1030%2C580&ssl=1)
New lab experiments confirm that disturbances in Earth’s magnetic field called Alfvén waves send electrons careening into the atmosphere to light up auroras.
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