Suggestion: collisions should increase temperature and fade over time. Also solar flares look... Strange and unnatural. More like cut-up ribbons, actually. But this is the first time anyone has done a solar flare simulation, let alone anything even vaguely like Universe Sandbox. I think that solar flares need to be more opaque and be the same color as the star, but what we have now is beyond what I thought would come in 2012
Also flares are very 2-D