Making fictional planets

I’m looking to make fictional planets and a sun that have the same look and feel as these done is CSS.https://codepen.io/juliangarnier/pen/idhuG

Would any of you have any high level advice, like what type of material you’d suggest I use?

Hi!

Whichever you’re comfortable to work with. For example, MeshBasicMaterial with texture(s) and/or modified shaders.

For some ideas, here is the jsfiddle Sprite Size - JSFiddle - Code Playground (related to this SO topic: javascript - Three JS Keep Label Size On Zoom - Stack Overflow)