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A massive sunspot that caused last month’s intense auroras across large portions of the planet is once again returning to face the Earth.
The AR3723 sunspot, which was formerly known as AR3697 and AR 3664, triggered an extreme G5 geomagnetic storm in May, which is the highest possible level.
The solar storm resulted in sightings of the Northern Lights throughout the UK and in dozens of US states. The celestial spectacle could even be seen in some parts of France for the first time in more than 20 years.
It is not clear whether the returning sunspot will lead to similar auroras, though astronomers have noted that the Sun is currently approaching a point in its …