Its good.. but...

Its lacking somethings in my opinion, in my perspective.
The synths, strings, those whole notes sound too.. stern, they need a Blur effect to them, a Reveerb of sorts, like if it was being heard from the room next to yours.
The piano, or whatever those high notes are, made this track sound too.. carefree, light, optimistic. Space is.. mystical, ominous, infinite, You have a good feeling in this piece of music, but its not exactly exploring space, or looking at space. It feels more like it could be a Planet your looking at, FROM space, but not Space in general.
Sorry for the negativity haha, but its what these things are for, Its good, you have good feel on this, just needs some readjustment.
-[TV]