Sky-gazers treated to another aurora show 

paris — Scientist Jim Wild has traveled to the Arctic Circle numerous times to study the northern lights, but Thursday night he needed only to look out of his bedroom window in Lancaster, England. For at least the second time this year, sky-gazers in many parts of the world were treated to colorful auroras at latitudes beyond the polar extremes where they normally light up the skies.  The dazzling celestial shows were caused by a gigantic ball of plasma — and an accompanying magnetic field — that erupted from the sun earlier this week.