Need a technique for a Planet shader in Ue4

Mattrobe

Hi I'm currently finishing a space environment and need a good way to go about making a planet shader in UE4. can anyone help or point me in a good direction.

The scene is below and the main shader is for the large planet in the background.

Also any critique is welcome on the scene.

thank you in advance

Mattrobe

As you can see the current shader is not really working out and need a new method.