The Web has some great space art for inspiration, Wallpapers, education, and so forth.

The space art I refer to is the kind that has a basis in reality, not SF or fantasy, though of
course quite a bit of that art is also great in tis own right.

Here are just a few of my favorites. Please post yours here too.

Frank Hettick:

http://www.skyhighgallery.com/default.htm

Joe Bergeron:

http://homepage.mac.com/joebergeron/

Mark A. Garlick:

http://www.space-art.co.uk/

Don Davis:

http://www.donaldedavis.com/

Don Dixon:

http://www.cosmographica.com/gallery/

Pat Rawlings:

http://www.patrawlings.com/default.cfm

Jon Lomberg:

http://www.jonlomberg.com/

Mucho wallpapers:

http://www.space.com/php/multimedia/downloads/wallpapers/

http://www.galacticsurf.com/spaceartGB.htm

You will note I did not list a few greats like Bonestell and Pesek. Not because their
art is any less than the above - indeed, they were the pioneers - but that the Web
site depicting their work is less than stellar in my opinion, and almost useless for
making any wallpapers.

http://www.bonestell.org/

http://www.zumstein-foto.ch/fotogal/pesek/index.htm

If anyone knows places that do show their work better, especially Pesek, please
put it here, thanks!