|A beautiful supermoon above the Washington Monument.|
The term super moon was coined in 1979 by Richard Nolle, however it's technical name is perigee-syzygy. When a moon is a super moon it is positioned roughly 357,000km away from the Earth, and so is 14% larger and 30% brighter than when the moon is at it's furthest position from the Earth (406,000km).
Super moons occur fairly regularly and a maximum of 3 super moons can occur within 1 full moon cycle. Meaning that every 14th moon is irregular and super!!
Explorer Fact: the next super moon is the night of August 10th.