The Aurora Borealis, as described by Polaris, is seen around the North Pole. There is an equivalent at the South Pole called the Aurora Australis.
Erin Way, who portrayed Shelia, was on another Marvel project, Agents of S.H.I.E.L.D. (2013), and she also played a woman with superhuman abilities in Syfy's Alphas (2011). Jeff Philips also appear on Agents of S.H.I.E.L.D. as well.