Solved via Mr Zak solution:
I'd try to apply scale for the moon object (object mode > ctrl+a), then in edit mode recalculate normals. It looks to be the reason for difference in shading in viewport
Solved via Mr Zak solution:
I'd try to apply scale for the moon object (object mode > ctrl+a), then in edit mode recalculate normals. It looks to be the reason for difference in shading in viewport