Ooookay so! I've decided to go and pretty much overhaul the space/nebulae background I've been working on. I've ditched the use of Spore textures for this one because they have a nauseatingly small resolution and looked like a mess sorta haphazardly strewn about the scenery. Instead, I've gone the cheap route and used ~stock images~ from a couple of different free CC0 image sites. I've found that this way I get much higher-resolution images that don't look abysmal in my background, and my result much more closely resembles Paranoid Modder's example images!
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http://www.youtube.com/watch?v=hPCLUWMJQFs[/youtube]
Paranoid, you did seem to really like the original version I did, and I feel a bit like a dummy for not saving a copy of that version, but I hope this version works better for you or at least as good as the first.
(I can redo the first version if you prefer that though! I still have the texture files I used for it.)