It’s poorly photoshopped too, imo. It looks like what it is - a composite of two disparate images, superimposed to give a sense of scale / positioning. Even if you could see in UV with the naked eye it would probably not look like this.
This image is more like a map that shows Russia and Alaska superimposed to compare relative size. It’s not realistic.
But here's a guide to show how the aurora animation can be made from real data taken by Hubble: https://www.planetarylightshow.com/aurora_processing.html