This weekend, a rare celestial event known as a
blue micromoon will grace the night sky, being the
second full moon of May. It reaches
peak fullness at 4:45 a.m. ET on Sunday, with the moon appearing about
252,334 miles from Earth, making it the
most distant full micromoon of the year and a rarity as it occurs roughly every couple of decades.
The blue micromoon is somewhat misleading—it won't appear blue or notably smaller, but it is celebrated for its namesake event. The moon's distance varies, as its average is about
238,855 miles, hence this weekend's distance will give it the title as a micromoon.
As noted by a spokesperson, “
It will be indistinguishable from being full the entirety of the night beforehand and basically the night after as well.” The last calendar blue moon, which took place recently in 2023, did not feature a micromoon.
The next occurrence of this phenomenon won’t be seen until
2037, making this event a highlight for astronomy enthusiasts and casual observers alike. A blue moon occurs approximately every couple of years, adding to the rarity of this micromoon spectacle.
Sources: 
A rare blue micromoon will illuminate the night sky this weekend, marking the second full moon in May. It will reach peak fullness at 4:45 a.m. ET on Sunday, occurring roughly every couple of decades. This year's micromoon will be the most distant since 2037.
