io9 had an article on Space Art and I followed the links coming across this group with tutorials and resources for making your own space art.

Could be useful for Mat design, I'm definitely going to download all the brushes and mess around with it... I'll share whatever I make.

http://pscreated-space.deviantart.com/

great print but the link doesn't show more artwork, perhaps you need to be logged in in Deviantart?

The link was broken, it would have worked if you had copy and pasted rather than clicked.. fixed now

thanks, very nice stuff!