FlipMesh Lighting Issue

Here's some example code to help you guys see my lighting problem :

Graphics3D 640,480
SetBuffer BackBuffer()

Global earthAtmosFlipped = 0
Global speed# = 0

Global camera=CreateCamera()
CameraRange camera, 1,3000

Global light=CreateLight()
AmbientLight 2,2,0

Global earth=CreateSphere(100)
Global earthAtmos=CreateSphere(100)

ScaleEntity earth, 200,200,200
ScaleEntity earthAtmos, 300,300,300

PositionEntity earth,0,0,1000
PositionEntity earthAtmos,0,0,1000

EntityAlpha earthAtmos,.25

While Not KeyDown(1) 

	atmosFlip()
	controlCamera()
	
	UpdateWorld
	RenderWorld
	
	Text 10,10, "[a] and [z] controls speed," 
	Text 10,25, "arrow keys To turn camera/ship,"
	Text 10,40, "NumPad 0 To stop"
	Text 10,55, "speed: "+speed#
	Text 10,70, "Enter the atmosphere and then go to the other side"
	Text 10,85, "of the planet to see my lighting dilemma"

	Flip

Wend

End

Function atmosFlip()

	If EntityDistance (camera,earth)-200 < 50 And earthAtmosFlipped = 0 Then
		FlipMesh earthAtmos
		earthAtmosFlipped = 1
	EndIf
	
	If EntityDistance (camera,earth)-200 > 50 And earthAtmosFlipped = 1 Then
		FlipMesh earthAtmos
		earthAtmosFlipped = 0
	EndIf
	
End Function

Function controlCamera()

	If KeyDown(205)
		TurnEntity camera,0,-.5,0
	EndIf 
	If KeyDown(203)
		TurnEntity camera,0,.5,0
	EndIf 
	If KeyDown(200)
		TurnEntity camera,-.5,0,0
	EndIf 
	If KeyDown(208)
		TurnEntity camera,.5,0,0
	EndIf 
	If KeyDown(30)
			speed# = speed# + .1
	EndIf 
	If KeyDown(44)
			speed# = speed# - .1
	EndIf
	If KeyDown(82)
		speed# = 0
	EndIf 
	
	MoveEntity camera,0,0,speed#
	
End Function

Is there a way to spin the lit side around or will the light always behave like it should and not the way I want? :)