July 19 moon waxing toward another supermoon [1]

Earthsky.org, 7/19/13

It’s a large waxing gibbous moon [2] that lights up the evening sky on the night of July 19. The moon is moving toward full phase [3], to usher in the year’s third and final “super” full moon – another supermoon [4] – on July 22, 2013.

Another supermoon coming up on July 22 [4]

The July 2013 full moon will be the second full moon after the June solstice. There are usually three full moons in between a solstice and an equinox, or vice versa. Seven times in 19 years, however, four full moons fall in a single season. In that case, the third of a season’s four full moons is sometimes called a Blue Moon. The next Blue Moon [5] by this definition will happen next month, on August 21, 2013

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