The Vault of Retro Sci-Fi
Sci Fi Art by Dan LuVisi http://www.danluvisiart.com/
Rogue One Portraits - Created by Rich Davies Part of the Rogue One Tribute at Poster Posse. Check it out here.
1928 ... by x-ray delta one, via Flickr The term 'Scientifiction' predates 'Science Fiction' by decades! I say bring it back, if it ain't broke why did they fix it?
Cywar Promethean by Y-mir on DeviantArt - sekigan
ArtStation - Another planet, maxim revin
The PA Report - A new look at iconic characters: the stunning concept art of Halo 4
Celtic Mandala by Steve Radic - some amazing stuff of his at this site.