Koronus Expanse - Aeldari of the Expanse: The Aeldari are an ancient and highly advanced alien humanoid race who voyaged across the stars long before Mankind could even comprehend such a thing. An extremely long-lived species, the Aeldari are physically similar to Humans, but with longer, cleaner limbs, slim and elegant features, pointed ears, and penetrating eyes. Though they may share superficial anatomical features with Humanity, an Aeldari could not be mistaken for anything other than an alien. They move with an inhuman grace and elegance, live with an intensity of experience many times greater than Humans, and possess potent psychic potential.The Aeldari have a long and complex history as a spacefaring species. They have been travelling across the gulfs of space for aeons and once ruled an empire of worlds that spanned the galaxy. Those days of dominance and glory have long passed, and the Aeldari that exist in the 41st Millennium are the dwindling remnants of a once-proud people. They are all that remain of a lost and wondrous age that ended with a cataclysmic event known as the Fall of the Aeldari, which caused the collapse of the great Aeldari Empire's civilisation as a result of the birth of Slaanesh, the Prince of Pleasure and youngest of the Chaos Gods in the early 30th Millennium. Most of those Aeldari who survived the Fall did so by fleeing the death of their worlds on great city-like starships called craftworlds, huge, continent-sized voidcraft many times more vast than the greatest ships of the Imperium that drift through the void on a journey without end.Though they are a dwindling species, the technology and artifice of the Craftworld Aeldari is highly advanced. Most Aeldari technology is based on the manipulation of psychoplastic materials collectively called wraithbone that uses psychic energy to create breathtaking architecture, light but extremely effective armour, and deadly weapons. Their starships are swift and sleek voidcraft propelled by solar sails and hidden by Holo-fields that hide their position and confuse observers. Incredibly manoeuvrable and armed with devastating weapons, an Aeldari starship under the command of a master of space warfare is almost without peer.For those Aeldari who dwell within the craftworlds, known among themselves as the Asuryani, the heightened pitch at which Aeldari experience life is tightly controlled by adhering to one of the Asuryani Paths which creates bounds and limits on an individual Aeldari's experience. Occasionally an Asuryani turns their back on their Path and embraces an existence without restrictions; these Aeldari are called Outcasts.This decision is a perilous one, as it not only leaves the Outcasts more vulnerable to the thirsting nemesis of Slaanesh that has pursued the Aeldari since the Fall, but also opens them to the risk of becoming consumed by their experiences and so lose themselves to darkness. The Aeldari Corsairs that prey on other starfaring species in the void are Outcasts from the Asuryani Path and are highly dangerous and unpredictable, equally likely to act with magnanimity or wanton slaughter.There are several Aeldari Corsair fleets active within the Koronus Expanse, ranging in size from single vessels to large and dangerous fleets. The exact number of separate fleets remains unclear, and distinguishing between different groups of Aeldari or the finer points of alliance and fealty among the various Aeldari kindreds is beyond most Humans. Some hunt weak and under-protected vessels like predators drawn to feeble and sickly animals, using the exceptional manoeuvrability of Aeldari voidships to take or destroy any voidcraft that stray into their hunting grounds.Rarely do the Aeldari Corsair ships attack the strongholds of other starfaring species openly, choosing rather the approach of the silent predator, unseen by its prey until it pounces. Of Aeldari Corsair bands that lurk in the Koronus Expanse, two whose names are known with fear and dread among the servants of the Emperor are the Children of Thorns and the Crow Spirits.