Supermoon encounters with Earth

The so-called supermoon passes behind the cupola of the state Capitol, in Sacramento, Calif., during a lunar eclipse Sunday, Sept. 27, 2015. The supermoon, or perigee moon, occurs when the full or new moon comes closest to the Earth making it appear bigger. It's the first time the two events have occurred at the same time since 1982 and won't happen again until 2033.