Several outlets report that a rare blue “micromoon” full moon will appear over the weekend. The event is described as both a blue moon and a micromoon: a blue moon refers to a second full moon in a calendar month, while a micromoon denotes a full moon that appears smaller because it occurs when the Moon is farther from Earth. The May 31 full moon is identified as the relevant date, and it is characterized as the most distant and smallest-looking full moon of the year. PBS NewsHour and Phys.org both describe it as a blue moon at the Moon’s greatest distance for the year, leading to a reduced apparent size. The Oregonian similarly states that the May 31 full moon is the smallest of the year. All three sources frame the phenomenon as an astronomical timing and viewing rarity rather than a change in the Moon’s color or other unusual behavior. Observers are expected to see the standard full-moon appearance, with the “blue” label tied to the calendar-based definition rather than a true blue tint.