It's the height of the aurora borealis season, but the skies have been relatively calm lately, with only a few mild auroras over the last month. Get ready, though. The northern lights may light up the skies over parts of the US over the next couple of days, giving people in northern states a chance to marvel at rainbow skies. According to the National Oceanic and Atmospheric Administration, Monday and Tuesday's auroras are brought to Earth by a rather large X1.4-class solar flare that erupted from the sun late on March 29 and was caught on video by NASA's Solar Dynamics Observatory. The flare came from region 4405 of the sun, an area known to be magnetically complex and highly active. The flare lasted for hours and peaked at 11:19 p.m. ET Sunday night. The CME may or may not cause a good a