The Blue Child returns to Azeroth

Players who were around during classic may remember that Azeroth once had two moons: The large, white moon was called the White Lady, and the smaller, blue moon was called the Blue Child. Lorewise, the White Lady was what the night elves called Elune and the tauren Mu'sha. The Blue Child doesn't seem to have figured quite as prominently in the lore, so I guess it was an auxiliary back-up moon for when Azeroth experienced sudden spikes in moon-related demand.

The Blue Child disappeared during patch 1.10.0 before the Burning Crusade. Anne's theory is that, since this coincides with Blizzard's addition of weather effects to the world, it was probably removed due to graphical errors. Whatever the reason, since then there have been only occasional references to its existence within the game: You could see it around the three-dimensional map of Azeroth in Halls of Lightning, and it was briefly visible during the Dragonwrath, Tarecgosa's Rest quest line. However, players were delighted to discover that it made a reappearance on the Mists of Pandaria beta, and it looks like patch 5.0.4 has finally restored the Blue Child to the world.

Thanks to Jeff Hoskins for the tip and Dawn Moore for the picture!