Material that simulates a star's surface, but without using Tessellation

Hi!

I’m using Unreal 5.3.2 and I would like to do something like this, but in Unreal 5 there isn’t material’s tessellation: https://www.youtube.com/watch?v=V756BDWdS28

Is there any way to create a material that simulates a star’s surface in Unreal 5?

I’m sorry, but I’m newbie in Materials.

Thank you.