Aurora watchers spot something new in night sky

Citizen scientists looking at the northern lights appear to have stumbled upon a new natural phenomenon. Members of the Facebook group Alberta Aurora Chasers posted photos of a mysterious purple streak cutting through the night’s sky. In their early posts, the group’s members referred to the streak of purple light as a “proton arc” — then gave it the anthropomorphic name of “Steve.”
Thanks to scientists, citizen scientists, ground-based imagers and ESA&r