This is fun too!

#declare TileNorm = function(x,z) { min(abs(cos(z)*cos(x))*20,1)  }


#declare planetexture2=texture{
	pigment{color White}
	finish{phong .7 phong_size 1 ambient .25 reflection 0.1}
	normal{ function {TileNorm(x,z) }, 1}
}

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