A single entity of a hive-mind of other Aeth’s. Aeth's typically are ether formed by windblown dust or are grown ether in specific Aeth farms or in the wild. There are currently 682 Aeth’s counted worldwide.
Even with the particles retarding the motion of the aether theories, the same will be true if, to counterbalance the increased inertia, suitable forces are caused to act on the aether at all points where the inertia is altered.