Actually if you want a photographically realistic result, the stars
shouldn't be visible even if you are "photographing" (ie. in this case
rendering) a planet (eg. Earth). Well, at least not if you want the
details of the planet to be visible.

  This is related to exposure time. The planet is brightly lit by the
Sun, but the stars are rather dim. If you set the exposure time of your
photographing device so that the details of the planetary surface are
visible, the stars will be way too dim to be seen. If on the other hand
you set the exposure time so long that the stars become visible, the
planet will become overexposed, ie completely white (well, the lit
part of the planet).

  Space movies are always unrealistic in this matter. There planets and
stars are perfectly visible all alike, which can't be achieved with any
ordinary photographing device. (In theory you would need some kind of
digital device which analyzes the image and corrects the exposure in
different parts of the image depending on their brightness.)
  On the other hand, space shots with completely black skies would be
pretty boring, so we can forgive this artistic effect.

-- 
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N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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