The Supermoon goes down behind the spire of the Empire State Building the morning of November 14, 2016 in New York.  

Skygazers took to high-rise buildings, observatories and beaches Monday to get a glimpse of the closest "supermoon" to Earth in almost seven decades, and snap dramatic pictures. The phenomenon happens when the moon is full at the same time as, or very near, perigee -- its closest point to Earth on an elliptical, monthly orbit. / AFP / DON EMMERT        (Photo credit should read DON EMMERT/AFP/Getty Images)