Looks like it was probably made with Trapcode Particular/Starglow. But if you don’t have those plugins, you could use CC Particle World, directional blurs and glow to recreate that. Probably multiple layers of different varatioins of those effects to create that effect.
For an even more organic look check out the Free Particle Stock Footage & Tutorial
Johnny Cuevas, Editor
Thinkck.com
“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.