While shingles on the skin can include swelling of the eyelid and conjunctivitis, shingles on the eye itself, called herpes zoster ophthalmicus, can cause something much worse â scarring that can lead to vision loss,
Because the time between two full Moons doesn't quite equal a whole month, approximately every three years there are two full Moons in one calendar month. The next time two full Moons occur in the same month (as seen from the United States) will be July 2015. The most recent blue Moon occurred in August 2012.
A blue moon will grace the night sky tonight (Aug. 31), giving skywatchers their last chance to observe this celestial phenomenon for nearly three years. The moon will wax to its full phase at 9:58 a.m. EDT (1358 GMT) today, bringing August's full moon count to two (the first one occurred Aug. 1).