VANCOUVER, BC - SEPTEMBER 9:  The perigee moon or 'supermoon' rises over the skyline of Vancouver on September 9, 2014 in Vancouver, British Columbia, Canada. Tonight's supermoon was the third in a trio of supermoons this summer. To have three in such close proximity is very rare and it is not expected that this will happen again until 2034. (Photo by Jeff Vinnick/Getty Images)