Aurora elders from watching or interpreting the messages of ancestors they believed were transmitted through an aurora. "[[Bulfinch's Mythology]]" relates that in [[Norse mythology]], the armour of the [[Valkyrie|Valkyrior]] "sheds a strange flickering light, which flashes up over the northern skies, making what Men call the 'aurora borealis', or 'Northern Lights' ". There appears to be no evidence in [[Old Norse literature]] to substantiate this assertion. The first Old Norse account of "norðrljós" is found in the Norwegian chronicle "[[Konungs Skuggsjá]]" from AD 1230. The chronicler has heard about this phenomenon from compatriots returning from [[Greenland]], and he gives three possible
Aurora the same as that employed in plasma fusion laboratories throughout the world, and appears well able to account in principle for most – if not all – detailed properties of the electrons responsible for the brightest forms of auroras, above, below and within the acceleration region. [[Image:Aurora Borealis.jpg|thumb|left|The aurora borealis as viewed from the International Space Station|ISS [[Expedition 6]] team, [[Lake Manicouagan]] is visible to the bottom left]] Other mechanisms have also been proposed, in particular, [[Alfvén waves]], wave modes involving the magnetic field first noted by [[Hannes Alfvén]] (1942), which have been observed in the laboratory and in space.