The 51st Æther, A celestial.
These Æthers are associated with the stars, cosmos, and the vast reaches of space. Celestial Æthers govern the movements of celestial bodies, the flow of cosmic energy, and the mysteries of the universe.
Celestials are beings born from the remnants of dying stars and cosmic events such as supernovas. When a star reaches the end of its life, the energy it releases does not entirely dissipate. Instead, much of that cosmic energy coalesces into ethereal forms, creating a Celestial.
Celestials can harness cosmic energy, and draw from other stars to harness destructive power, manipulate light, gravity, and other celestial forces. They can also regenerate by absorbing starlight.
They are nearly indestructible and communicate across vast distances through the universe. They can also forge new stars by recycling the remnants of dead celestial bodies, ensuring the constant flow of energy in the universe.