What you need to know about the 'supermoon' lunar eclipse

Sunday night, the sun, earth and a full moon will be in a straight line, making the moon, which is in its closing point of orbit, appear much brighter than usual. This phenomenon, referred to as "supermoon" total lunar eclipse, hasn't happened in 33 years and won't for another 18 years. For more on this, PBS NewHour's Hari Sreenivasan talked to science correspondent Miles O'Brien.