For someone with a relativity background, the term 'aether' is an enigma - we know that light must have something to propagate in, but then, Einstein's theory abolished the absolute aether.
Now there is a new group, the "Quantum AetherDynamics Institute" that offers a theory that (they say) is compatible with modern observations and based on a "dynamic aether".
Be forewarned that the formulators of this theory admit to be "self-educated amateurs interested in quantum physics..." and that the physics community is largely ignoring them. So don't become too exited. Nevertheless, one cannot afford to totally ignore new ideas. Read more in Quantum EatherDynamics and tell us what you think.