Way back in the day when I was still deep in the Steampunk scene, my friend Alex and I wrote a book about the subculture, its roots, background etc.
One of the background infos I provided concerned the aether, or as I usually spell it æther. You can find it on page 58 of that book. In it, I point out that the discovery of the nonexistence of the aether led to the development of the Theory of Relativity.
And now Matthew John O’Dowd of PBS Space Time published a video in which he explains the whole thing in more detail and more scientifically astute than I ever could. Enjoy!
Header image (c) OliverInk, fair use.