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Wired1 year ago
A New Type of Aurora Found on Saturn Resolves a Planetary Mystery
Earth's northern and southern lights-the result of a rendezvous between magnetic fields, energized particles from the Sun, and our planet's atmospheric admixture-are wondrous spectacles.
"To my knowledge, [this is the] first time an aurora driven by atmospheric winds has been detected," says Rosie Johnson, a space physics researcher at Aberystwyth University in Wales who is not involved with the study.
Earth makes it easy to measure how long a day lasts: 24 hours.That's because our planet is covered in readily identifiable, fixed landmarks.
You can't do this for worlds where the surfaces are obfuscated by thick gaseous veils, like Jupiter, Saturn, Uranus, and Neptune.