You don’t want to miss the full moon sighting tonight!
It is unlike anything we’ve seen since 2012 and won’t see again until early 2018.
“Once in a Blue Moon…”
In reality a Blue Moon occurs when we witness 2 full moons in the same month. No, the color of the moon does not actually change to blue (but wouldn’t be a sight!)
The first full moon happened in the beginning of this month, on July 2.
What are the chances of seeing two full moons within the same month?
It is a rare phenomenon that only takes place about once every 2 1/2 years. We won’t be catching the next Blue Moon for another until January 2, 2018, but rest assure tonight it will not be hard to find.. Just look up and enjoy the view!
The reason behind Blue Moons
We experience blue moons because the length of a calendar month on Earth is not equal to a lunar month, which is the time between the full moon phases, from full moon to full moon.
While on Earth most of our months are 30 or 31 days long a lunar month is about 29 days long whereas . That explains why the full moon doesn’t happen on the same date every month and why we sometimes see an overlap in the number of full moons within the span of a single month.
The term has changed over the years, so if you thought blue moon meant something other than the second full moon in a month, you’re not imagining things. It is also used to refer to the fourth moon in a single season.
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