Yeah..always be careful with what you dream
As for space, not sure which movie got the most realistic space so to speak, that blackness is probably hard to capture right, though real cameras up there must have been able to capture it decently though.
I think it was Chris Hadfield actually mentioning how it really looks, a sort of deep transparency that may not be what we really can see in space movies.
It varies in realism for sure, from a rather messy highly unrealistic flight with spaceships from the latest Battlestar Galactica inside a lot of nebula clouds, which is highly unrealisticly consider the true scale of such things and distance to objects et, but it may give a colorful display to have it´s effect.
I still love the first Alien movie and it´s space scenes, especially that vast picture of the refinery ship when it changed course to lv 426, and that huge ship is just a small little object in that space picture.
And of course, the accompanying sound and music from Jerry Goldsmith was something extraordinary, even though I think he himself wasn´t so fond of what finally was used since he had other ideas originally.
But it captured space as deep, vast, terrifying, mystical.
The color grading in Alien was actually quite a bit chromatic for sure and bluish, grey, green sort of, but you really have to be careful to choose the right tones I think, it´s actually the same there..unless the hull itself would have a color tint, it shouldn´t be there either, but in that case it worked galantly I think, it bonds with a theme in general with the alien look as blue, dark grey sort of.
We will soon have the first feature movie filmed to some degree up there in Real space, with Tom Cruise actually going up there to the ISS, and it may be the first movie, but there´s a russian movie I think who may get there first
, they still compete and now it´s about who´s gonna make the first feature movie.