The article says "On Sunday night the skies will be greeted by a reddish Supermoon and a lunar eclipse, a combination that hasn't happened for 30 years and won't happen again until 2033, according to NASA. The moon will appear bigger than normal during the eclipse because it will be closest to Earth while in orbit, which scientists call a perigee."
Be sure to go outside tonight around 9 (if you're still up) to watch or go to NASA.com to watch the live online video feed starting at 7:30.