From the answer posted on this thread, I was wonder what is meaning of Ether in reference to the Star Wars franchise.
Luke focused on the emptiness of space beyond the window behind the Emperor’s chair. The deep void, where nothing was. Nothing. He filled his mind with this black nothing. Opaque, save for the occasional flickering of starlight that filtered through the ether.
What I found about ether on Wikipedia is that "it is class of organic compound".