If you’re looking for Space Iconography Free Icons then have a look at this icons set. This is collection of 36 neatly designed icons inspired by celestial bodies and other various space elements. Download it for free and add to your freebie collection right now!
I really like the top half of the designs (though they're perhaps a little too detailed), but not so much the bottom half. I seem to have a thing for vivid autumn colors. That would be good to remember for this project and my own designs.