Aurora (Northern Lights) - After Effects Tutorial 

This tutorial shows how to make realistic auroras in After Effects, using the 'Aurora Effect' from Creation Effects. Available for $19 at creationeffect....
The Aurora Effect lets you create realistic auroras in After Effects. Commonly known as the "Northern Lights" or "Aurora Borealis", these natural light displays are easy to composite into your footage or animations. Included are 6 different aurora presets. Each aurora has customization controls so you can achieve an endless variety of looks. Easily customize the shape, speed, perspective, colors, brightness, and more. Also includes a night sky and star effect.