Aether...The 5th Element

According to ancient and medieval science, aether, also known as the fifth element or quintessence, is the material that fills the region of the universe beyond the terrestrial sphere.

Quintessence:
The fifth and highest element in ancient and medieval philosophy that permeates all nature and is the substance composing the celestial bodies.

https://www.merriam-webster.com/dictionary/quintessence

“AETHER”: The Water Which Connects Everything :

https://tartariabritannica.com/blog/aether-the-water-which-connects-everything/