The original Eldar homeworld was destroyed during the catastrophic collapse of the Eldar civilization known as the Fall of the Eldar. The Eldar race has a long and complex spacefaring history, so long in fact that little is known for certain about the course of their physical evolution and early planet-bound existence. Now they cling to survival by a thread, fighting the horrors of the galaxy with ritualized discipline and consummate skill. Despite their boundless power, the heart of their civilization was torn out by this catastrophe of their own making, forcing the surviving Aeldari, now calling themselves 'Eldar,' to flee upon gigantic, continent-size starships called Craftworlds.

But millennia ago, the Aeldari's overweening pride and their fall into hedonistic practices led to a cataclysm that all but eradicated their kind and led to the birth of the Chaos God Slaanesh.

The Aeldari Empire was without equal, and they counted themselves masters of the stars. The Eldar, or Aeldari as they were known in the Eldar Lexicon before the fall of their lost realm, or the Asuryani (followers of Asuryan) as they refer to themselves, are an ancient humanoid alien race whose vast empire once extended the width and breadth of the known galaxy. Eldar Empire Rune for the Aeldari race in the Eldar Lexicon

Cegorach the laughing god