As a natural phenomenon, there is substantial variation between auroras. Pale light may appear as an arc ... The exact same aurora will look very different from different latitudes, for example.

Last year brought some spectacular light displays to the UK, with the northern lights, or the aurora borealis, being seen as ...

In a paper recently published in Nature ... "light" in these magnets is much slower—about 100 times slower than the speed of spinons. This stark difference leads to fascinating phenomena such ...