News | UKOnce in a Blue Moon... Well, what did you expect? A plane cruises in front of the moon in New JerseyAPEvening Standard Reporter21 August 2013A rare blue moon dominates the night sky as a plane flies past.A plane outlined against the stunning moon on the approach to Los Angeles International AirportAPThe phenomenon, also known as a full sturgeon, green corn or grain moon, doesn’t refer to colour — it is actually an extra summer moon.In most seasons there are three full moons but occasionally there are four (the next is due in July 2015). Huge moon: fans at a baseball game as the full moon rises in Kansas CityAPAlthough last night’s blue moon, seen here from New Jersey in the US, is not actually blue, there have been blue moons in history. The last was over Edinburgh in 1950, caused by moonlight seen through particles from Canadian forest fires.Red moon: the moon rises over the New York skylineAPIn this photograph taken with a long shutter exposure, gnats are lit up by a lamp as the moon reaches its full stage, as seen from West Orange, New JerseyAP MORE ABOUTCanadaEdinburgh, ScotlandFoodForestryNew JerseyScotlandUSA