Advertisement. Airbus, which is under increasing pressure to prove the viability of its A380 production rates, yesterday conceded that it still needs to fill a âsingle-digit numberâ of production slots for the type in 2015.dvertisement. Airbus, which is under increasing pressure to prove the viability of its A380 production rates, yesterday conceded that it still needs to fill a âsingle-digit numberâ of production slots for the type in 2015.
Where did the phrase 'once in a blue moon' come from? A folklorist traces the convoluted evolution of the phrase, while discussing why it adopted the many meanings it has throughout history.
Defining the Original Blue Moon. The original astronomical definition is that a Blue Moon is the 3rd Full Moon in an astronomical season with 4 Full Moons. A normal year has 4 astronomical seasons - spring, summer, fall (autumn), and winter - with 3 months and normally 3 Full Moons each.