How to create an atmospheric glow effect on surface of globe/sphere

Hey folks,

I am trying to recreate something similar to the Github Globe. I’m wondering what the best approach would be to replicate this atmospheric glow effect:


I have created a simple example with the sphere https://codepen.io/ian-whitestone/pen/gOGLprx if it’s easier to demonstrate with a working example.

Any help / pointers would be greatly appreciated!