The month of August brings us not one, but two full moons. The first will kick off the month on Wednesday (Aug.1), and will be followed by a second on Aug. 31.
Some almanacs and calendars assert that when two full moons occur within a calendar month, the second full moon is called a “blue moon
.”
The full moon that night will likely look no different than any other full moon. But the moon can change color in certain conditions.
After forest fires or volcanic eruptions, the moon can appear to take on a bluish or even lavender hue. Soot and ash particles, deposited high in the Earth’s atmosphere, can sometimes make the moon appear bluish. Smoke from widespread forest fire activity in western Canada created a blue moon across eastern North America in late September 1950. In the aftermath of the massive eruption of Mount Pinatubo in the Philippines in June 1991 there were reports of blue moons (and even blue suns) worldwide. [Infographic: Blue Moons Explained]
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