A spectacular light show seen dancing across the atmosphere of the planet Saturn is helping scientists understand one of nature's most beautiful and mysterious phenomena on Earth – the northern lights.

Astronomers have captured detailed images of the aurora on Saturn using the Cassini space probe, revealing for the first time how its intensity changes through the day.

They have created a short film showing how Saturn's aurora, which are the equivalent of the northern and southern lights on Earth, brighten and dim during the course of a day – which lasts 10 hours and 47 minutes on Saturn.

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