A Moon that actually looks blue, however, is a very rare sight. The Moon, full or any other phase, can appear blue when the atmosphere is filled with dust or smoke particles of a certain size: slightly wider than 900 nm. The particles scatter the red light, making the Moon appear blue. This is known as Mie scattering and can happen for instance after a dust storm, a forest fire, or a volcanic eruption.
The full Moon of May 18 is called the Flower Moon in America and the Blue Moon in UK and Australia..
Traditionally, the name Blue Moon was given to the third of four full Moons in a single astronomical season (meaning Blue Moons will occur on 21 May 2016, 18 May 2019 and 22 August 2021), but largely due to the US radio program StarDate in early 1980 and the board game Trivial Pursuit, people haveContinue reading “Full Moon 31 July 2015 Russell Island..Blue Moon”