Galaxy and Meteor built using Unity VFX Graph,You can modify Galaxy's particle changes and Meteor's direction yourself.Detailed video explanation:https://www.youtube.com/watch?v=r2FjK6Tzjd4
2021.3.2f1(up)Render Mode:URP & HDRPRequires Unity Packages to be installed: Visual Effect Graph
After downloading, please unzip the file first, and then import the Package file into Unity.