In May 2026, a unique celestial event will take place as the only blue moon of the year peaks on May 31. This occurrence is due to the presence of two full moons within the month, a result of the lunar cycle being shorter than the calendar month. The first full moon will occur on May 1, followed by the blue moon at the end of the month. Although the moon does not actually turn blue, certain atmospheric conditions, such as smoke or dust, can scatter light and create a bluish appearance. Blue moons are relatively rare, happening approximately every 2.7 years, which is why the term 'once in a blue moon' is often used to describe infrequent events. For those in Arizona, this blue moon presents a perfect opportunity to engage with astronomy and enjoy the beauty of the night sky during this exceptional event.