for source material check out the new york public library digital image archive here. an interesting project was posted on rhizome yesterday here. i also like this site-Digital Librarian: a librarian’s choice of the best of the Web. really cool…
if its nasa images that you want, then you can find them here. there are so many interesting tools that an artist can use to create digital images. today’s artist needs to be apprised of the current ubiquitous nature of digital technology. i.e.- we need to move out of the art world and engage everyday technologies with our work. re-tool, re-mix, re-purpose, re-invent, mash it up folks and let’s see what you got…
here is an interesting project that i found on networked performance. its certainly net.art but is also a digital image project. which raises another issue about your digital images-why do you make them? who are they for? where do they live?

there is also a fantastic looking call for entries here.