BILDGEIST is a “visual journal of scientific illustrations, illuminated manuscripts, photographs, prints and artworks from the public domain”. The images are of various themes including astronomy, alchemy, mythology, cartography, anthropology, zoology, botany, and general curiosa. Users can filter the contents by period, categories and keyword tags.
The National Aeronautics and Space Administration, or NASA in short, is an American agency that pioneers in aeronautics research, space explorations and operations, space technology and science. Their image galleries provide access to non-copyrighted up-to-date images and other multimedia files that were captured from their operations, missions and research.