Watch the smallest full moon of 2026 tonight in this rare 'Blue Moon' livestream

The 31 May 2026 “Blue Micromoon”, the smallest full Moon of the year: online observation - YouTube Watch On The second full moon of May, the 'Blue Moon', rises tonight, marking the smallest full moon of 2026. You can watch the full moon live online thanks to a free livestream from astronomer Gianluca Masi and his Virtual Telescope Project in Manciano, Italy. The livestream begins at 9:30 p.m. EDT on May 30 (0130 GMT on May 31), and you can watch it live here on Space.com (via the video above) or directly on the Virtual Telescope Project's WebTV or YouTube channel , weather permitting. The livestream will also feature archival images of the moon above some of Rome's most iconic monuments, according to the Virtual Telescope Project. What is a Blue Moon? A Blue Moon can mean one of two things, though neither definition has anything to do with the moon actually appearing blue. The original meaning, known as a seasonal Blue Moon, refers to the third full moon in a season with four full moons, according to NASA. A later interpretation, arising from a misunderstanding of the original definition, refers to the second full moon in a single calendar month. Over time, this monthly definition has become widely accepted alongside the seasonal one, according to Time and Date . The Blue Moon this weekend is a monthly Blue Moon. …