Corrected entry: In almost all of the outer space shots the stars in the distant background "twinkle". When looking into space from earth stars appear to twinkle because of the distortion caused by the atmosphere; when viewed from space all of the stars should have a consistent glow - no twinkling.
BocaDavie
16th Feb 2009
Correction: Thats not entirely correct. The Mutara Nebula features heavily and is cloud like, and clearly stretches far beyond what is visible, this alone can account for the twinkling stars.
GalahadFairlight