Hi all, I've just recently gotten into AE and had a bit of a snag . I was wondering how - if even possible - to orbit a light around an object? Ex, a comet caught in a planets orbit. My light is either in front or behind my object. I want it so, at first, it is behind my obj and than gradually travels through 3D space to wind up in front of it. Thank you, anyone/everyone, for your help.
You should be able to use keyframes to animate the light's position around whatever object you want.
What part of it are you having trouble with?
Also, as someone just starting off, I highly suggest you go through all of the resources here before you try other things.
Place a 3D Null at the centre of rotation. Parent the light to the Null. Rotate the Null.