What would be the implications of the cosmos actually being filled with ether?

I'm working on a space-fantasy setting and one of the cosmological quirks is that the cosmos, instead of being a vacuum, is actually filled with a gaseous substance. As a result, the entire cosmos is essentially an infinitely large nebula. The ether, which is silvery in hue, in addition to being aesthetically pleasing, helps justify certain space opera tropes, such as relatively close range combat at relatively slow speeds; perhaps even fighter craft. The ether is quite abrasive; anything moving through it is subject to a considerable amount of friction. It also diffuses coherent beams far more than a planetary atmosphere. The ether becomes darker and more condensed the cooler it becomes. Imagine that people could look out from their ships into the dark and eerie "deep ether".

How dose the existence of an all pervading ether effect the lives of the people living in this cosmos? What dose the sky look like?

posted about 9 years ago

Trismegistus‭

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