What causes the violent eruptions that occur in the crown of the Sun? A 30-year investigation leads physicists at the Mullard Space Science Laboratory in London to answer that culprits are erroneous magnetic fields forming inside the Sun. Until now it was thought that these violent eruptions formed in the crown itself, but, according to data from the British physicists, the key is in the magnetic fields that form gases that continuously extend or rise from the interior of the Sun. These violent eruptions are, among others, the cause of the northern lights.