quite a picture for so small res.

I like the mood

colors are much better on Manupix edit, but composition breaks golden rule - astronaut shouldn't be at half screen line ;)

I love the atmosphere in this.

Contrast is very low in the brightest colors, the sky detail is almost invisible on my laptop.

Made an edit: reddened the spacesuit shadows for better color cycling and martian dust realism; darkened the sky a bit, cropped to a more balanced square composition.

Thanks a lot for your nice comment, cure! :)
I am sure that the hybrid version would NOT be accepted, since a very similar case recently.
Even if it's 100% pixel art, the clouds would cause revision issues. 

I really love this, simple but succint. I like the "NPA" version as well, and personally I think it's acceptable for the PJ gallery, but I'm not a mod so it's not my job to split hairs.