关于这张图
An aurora in Whitehorse Yukon Canada that appeared in the sky in the early hours of Oct. 1, 2012 due to the effects of a coronal mass ejection (CME) that erupted from the sun three days earlier. Image Courtesy of Joseph Bradley to read more go to: <a href="http://www.nasa.gov/mission_pages/sunearth/news/News092812-cme.html" rel="nofollow">www.nasa.gov/mission_pages/sunearth/news/News092812-cme.html</a> <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b> <b><a href="http://www.nasa.gov/centers/goddard/home/index…
