I ran across this blog...

http://russnicholson.blogspot.com/2013_03_01_archive.html

...with some pretty nice stuff by a British artist named Russ Nicholson, who started out doing work for 70's fanzines.

The astronaut in this BORDER RUFFIAN 2 cover (1978) has a delightful quirkiness.







Another of his images, Space Marines, is crammed with detail and riveting in a completely different way. It's reminiscent of Heinlein's Starship Troopers, more representative of the book than the movie.