Full moon is called a blue moon. The term "blue moon" used in this sense may date to as early as the 16th century, but it became well known in the United States due to the "Farmers' Almanac" (published since 1818). According to the "Farmers' Almanac", a "blue moon" is the third full moon in any period between either solstice and equinox, or between equinox and solstice, (calculated using the mean tropical year), which contains four full moons. These seasons are equal in length, unlike the astronomical ones, which vary in length depending on the Earth's speed in its elliptical orbit round
Heroes of the Equinox Heroes of the Equinox Heroes of the Equinox is volume eight in the French comic book (or "bande dessinée") science fiction series "Valérian and Laureline" created by writer Pierre Christin and artist Jean-Claude Mézières. Valérian, accompanied by Laureline, is one of four representatives from different races dispatched to the planet Simlane. Landing their astroship at Simlane's astroport, Valérian discovers he is the last to arrive. They are greeted by the members of the Simlane Great Assembly and taken to the city, which is crumbling and falling into ruin. The entire population is made up of old men and women. The