Star trail is a Houdini digital asset (HDA) , that let you create a design and motion graphics similar to those images on my behance:
https://www.behance.net/gallery/90828223/Visual-Experiment
It's using the new sweep in houdini 18 , but you can use it on older version of houdini and replace the sweep with an older one or use polywire . it's also work on the other 3D app like cinema4d - max - maya - unreal - unity .. etc via houdini engine plugin .