This is very gripping. All of the visible stars and clusters are arranged in set patterns that convey a strong sense of motion. This motion is further enhances by the opposition of warm and cool colors, and the symmetrical division between the two helps to make smoother this motion.
Also, I just noticed that those with the cooler colors tend to be more reserved and static in shape, while the opposite is true of those with the warmer colors. I remember being taught in art class that, in perspective, warm colors pop out towards the viewer and cooler colors recede away from the viewer.
It is very refreshing to see the stars arranged in predictable and clear patterns. It's very easy on the eyes, and makes the picture easy and downright fun to read.
A sense of the supernatural and the dreamlike has not been lost, due to the blurriness and misty appearance in the stars. A very good balance of sharpness (for the central bodies), and blurriness (for what surrounds the central bodies). Actually, this balance of contrast helps elaborate further on the motion present in the picture. That, and it's hard not to see celestial bodies like this as dreamlike.
There are some moments where the mist from contrasting colors almost contact one another. This is kind of like two different worlds, or concepts (for more abstract interpretation), interacting with one another.
One comment, though. The reason why three stars were given for originality was because some of the patterns seemed to be based off of well established patterns from other sources. For example, the three brightest stars, along the top half in the cooler colors, seem to abstractly form a trefoil.
That's about it, and keep up the good work.