You may have heard the phrase “Once in a Blue Moon”, knowing it stands for something that doesn’t occur often, but have you ever wondered what a blue moon actually is?  Like many coined phrases in history, here are several definitions behind the term “blue moon”. The first, and what comes to mind when you think of what a blue moon would be, is listed as the very rare occasion where the moon actually carries a blueish hue, due to particular floating particles in the atmosphere.  You may rest your eyes upon this type of blue moon only a few times during the course of your life. The second, the…