You can recreate that really simply with CC Particle world. I made an example project for you to use as a starter project.
4044_fairydustcs5.aep.zip
These are the values I used but they all can be adjusted to taste.
Apply CC Particle World to a solid. Adjust the Longevity to 4 seconds. Animate the X position of the produer.
Also animate the birth rate by setting a keyframe(decide how many particles you need) and then move 1 frame forward and set a keyframe to 0. This way when the move is finished, you are creating particles that might drift on screen.
Physics Settings: Velocity = .25, Gravity = -.05, Resistance = 1.5
Particle Settings: Create the particle size and color you want.
I used a color map that starts with the solid color I created and changes to a light blue over the particles 4 second lifetime.
Finally I added a slight glow to the particles.
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.