[?] Rotate a 3D Object?

I want to rotate earth about z axis but it gives me error that object is not 3d Graphics

You apply GeometricTransformation to the primitives of Planet, that you extract with [[1]]:

Graphics3D[
 GeometricTransformation[Planet[[1]], 
  RotationTransform[Pi/3, {0, 0, 1}]]]

Use Show rather than Graphics3DÂ…

Sorry, this is the right answer… I didn’t quite understand what was done…