Hmm had a look & it dosnt look the same mate, but the textures that come with it, the fluidy looking ones like antfarm, nebulae & molecular (Names of the textures in photoshop) have that fluidy look that could get in a nebulae, but yeah having a look i can see your nebulae is definitely different.
wow.. the colors are amazing, it reminds me of space dust, kinda like the horse head nebula, and i love how its singled out. excelent balence of warm colors against black.. just *drools* niiiiice.. i relaly like it
p.s. GOOD LUCK WITH THE BAND!
Though this isn't necessarily my style of art, I can completely tell that it was worked on with a great deal of effort and that's always a great trait in an artist, an admirable one as well-- so awesome job! I'm apparently not too familiar with composing entire pieces by photoshop, but I must say that I am very impressed-- for I (obviously) wouldn't even know where to begin with something like this.