Yes, you can do this.  Go to povray.binaries.images and check out my message
titled "Media cloudscape revisited" (10/5/98).  The original image was by Mike
Andrews.  His message was "A media cloudscape ..." (9/28/98), and his code can
be found in povray.text.scene-files in the message "Media clouds." (9/29/98). I
posted two sunset images that both look pretty good.

A word of caution:  These scenes take a long time to generate.

If you want my modified version of Mike's scene, let me know (I hope he doesn't
care).

-Nathan

dave wrote:
> 
> Is there any way to simulate the earths atmosphere in order to produce
> realistic sunsets and how is the sun itself done?
> 
> for example:     if the sun is near the horizon the sky turns red if it is
> up higher
>                            the sky is blue.
> 
> -Dave

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