in space there's little flames and smoke, it sitll happens but not same way it does on Earth..no air except IN the exploding object etc.

Explosions would tend to look like "galaxies", there's no ground, explosions go out in a sphere but from YOUR viewing point you see through a "thickness" giving it a sort of donught look. Imagine a giant glass bubble expanding with a lot of thickness.

http://www.silverblades-suitcase.com/vue1/gunwing6.jpg

that pic I used tori mostly for the nuke detonation, spheres inside for some flames, a plasma material and a spot light powerful with big custom lens flare to fit the epxlosion. The space station nearby has just been crisped by the near miss, flames/smoke driven back by outer edges of shockwave/light.

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