We can all see the Orion nebula from earth.  It's pretty bright.  I
think some others are visible too, they just look like stars is all. 
You can see the Andromeda galaxy under clear skies too, and it's
actually pretty big.  Looks like a faint fuzzy patch if you use averted
vision.

Lens flares are internal reflections of the camera lens.  That's why
they are shaped like the diaphram of the camera.  The colors are at
least partly attributable to the coatings used on lens elements (thin
film interference like POV's iridescence).

-Mike

portelli wrote:
> 
> Well we would see no nebula's from earth, none in the general vicinity.
> But I go out in the country and look up I can see the Milky Way accross
> the sky.  A more dense area of stars.  And Lens flares, are they not a
> product of atmospheres, so really lens flares in space are an artistic
> toush.  But I could be wrong.  And the Hubble could not get a lens flare
> because it would fry the optics.

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