I am new to Unreal Engine Four, and I am trying to build a galaxy using particles. I don’t know the first thing about how to go about this. Can anyone help me?
The first thing probably would be to get acquainted with the particle system itself.
General infos about the particles:
Cascade Particle Systems | Unreal Engine Documentation
Specific tutorials for generating different particle effects.
Introduction to Cascade | v4.2 | Unreal Engine - YouTube
I don’t know of tutorials, which describes the process of creating a galaxy using particles. But I think the above links will give you a hint, where to start.
My advice: If you want to run your galaxy at a decent framerate, I would recommend using GPU particles, because they take advantage of your graphics card, instead of relying on your CPU. They are also explained in one of the tutorial videos above :).