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!
Alcohol Inks on Yupo
Random Stuff Free Iconset
Look at that! Flat icons escaped to a new dimension. https://www.behance.net/gallery/20126697/La-Poste