hey guys how do i make a photo realistic eurth i have the hd textures of eurth but i want to know how i can make it as real as posible
and how to do the gradiant ramp(this is in 3ds max a material that allows you to make a sort of fallof layer
to get the blue glow and yes i have traid it with an halo in unity but thats not what im looking for it isnt real
It's not quite clear to me what you want the gradient ramp to control from your post - a screenshot from max would go a long way.
I think I know what effect you're after, but not exactly.
As I see it you have 2 options. The first (if you have Unity Pro) is to try and use image effects like glow or bloom with some tweaking - Image effect scripts.
The second is to tweak an existing shader to do what you want.
A good place to start is the Wiki (for example the XRay shader uses a gradient ramp to use the angle you're looking at the object to determine transparency).