The layer’s parameters:
Blending Mode-Difference
Blending Options>Outer Glow

We have to choose the same instrument applied before to represent the shadows and the lighter zones on the sphere. First we need to represent the outside edges and then press the Alt button to cut out two ellipses on the primary sphere.

The layer’s parameters:
Blending Options>Inner Glow

Blending Options>Gradient Overlay

Gradient’s parameters: