The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument is one of NASA’s five Earth-observing instruments. Launched on December 18, 1999, on the Terra satellite, ASTER “images Earth to map and monitor the changing surface of our planet” by capturing high-resolution (15 to 90 square meters per pixel) images of the Earth. Since then, more than 2.95 million images were captured. The content “ranges from massive scars across the Oklahoma landscape from an EF-5 tornado and the devastating aftermath of flooding in Pakistan, to volcanic eruptions in Iceland and wildfires in California”. Users can view a fraction of the images from this website, while the rest can be accessed from a series of different tools provided.
Creative Vix provides free stock images for design. Users can browse the images by categories. Creative Vix also provides other design resources such as tips, tricks and trends.
Tookapic was launched as a platform to help users to “develop a habit of daily photo taking in a fun and addictive way”. The habit is gamified where users will be awarded with points and badges. Users are also able to share their images for reuse. The stock photos section of the website presents the pictures shared by the community. As of November 2015, there are more than 14,000 stock photos uploaded with 66% free for download. Users can search or browse by different categories.
Founded in 2002, SpaceX is an American company that “manufactures and launches advanced rockets and spacecraft”. Their Flickr account shares photographs of their rocket launches and space missions.
Kunstformen der Natur (or known in English as Art Forms in Nature) is a book of prints by German biologist, Ernst Haeckel. The geometric shapes and natural forms captured precisely by Haeckel continue to inspire artists and scientists. Via Wikimedia Commons, you may access more than 100 illustrations from the publication.
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.
This collection is a cabinet of curiosities compiled by Sydney-based Paul K (also known as PK or peakay). It contains rare book illustrations and drawings from digital repositories, covering a wide range of “styles, topics and time periods… from astronomy to zoology and from Art Nouveau to the Renaissance”, as indicated by PK. Each set of images are accompanied by a URL linking to the bibliodyssey website that contains the background commentaries. A book titled “BibliOdyssey : archival images from the Internet” was also published in 2007 based on the compilation. As of October 2015, more than 10,000 images have been uploaded to Flickr.
The National Archives and Records Administration (NARA) or National Archives is a “record keeper” of the United States Federal government. Besides contributions from the National Archives, the Flickr account contains photographs from the National Archives and the federal photography project called Project DOCUMERICA (1971 – 1977). The project was initiated by the Environmental Protection Agency (EPA) to capture the environmental problems and achievements of that era.
Wikimedia Commons is a “media file repository” of public domain and freely-licensed educational media content, including images, sounds and video clips. Launched on 7 September 2004 by the Wikimedia Foundation, Wikimedia Commons uses the “wiki-technology” that is the same technology used in Wikipedia. Wikmedia Commons also aggregates files from other projects, including Wikipedia, Wikibooks, Wikivoyage, Wikispecies, Wikisource, and Wikinews. As of October 2015, there are more than 28.7 million files in more than 120,000 collections. Users can conduct a keyword search or browse the content by topic, type, author, location, license and source.
DesignerPics.com is developed by Jeshu John, a web designer and developer based in Kochi, Southern India. Users can search by keywords or browse by categories.
This site features visual mash-ups, mosaics, blends and collages created by QThomasBower. As of September 2015, there are about 400 works uploaded.
The Project Apollo Archive was first created in 1999 by Kipp Teague. It contains photographs pertaining to the historic manned lunar landing program – Apollo. According to Teague, the archive is “a re-presentation of the public domain NASA-provided Apollo mission imagery as it was originally provided in its raw, high-resolution and unprocessed form by the Johnson Space Center on DVD-R and including from the center’s Gateway to Astronaut Photography of Earth web site”. All digital images are scanned from the original photographs taken by Hasselblad cameras.
The National Media Museum is situated in the UNESCO city of film, Bradford in United Kingdom. It houses more than 3.5 million items in their collections that are of cultural significance to photography, cinematography and television. The museum contributed about 580 photographs to Flickr Commons, which include photography equipment, famous photographers and writers, British Royal Family, significant events and world’s first moving pictures. Each image includes commentary provided by the museum.
Divvy Pixel curates public domain images from various sources. Images provided on their main site and online galleries are on public domain and can be used personally or commercially. Users can browse and download the images individually or all at once.
Picjumbo is developed by photographer, Viktor Hanacek. Users can search by keywords or browse by different categories.
Photogen provides free high-resolution photographs for download and reuse. Users can search by keywords or browse by categories.
Texturegen provides free high-resolution textures and backgrounds. As of September 2015, there are more than 1,100 textures available. Users can search by keywords or browse by categories.
Pixabay is a photo community that provides images on public domain. The site contains curated images contributed by photographers around the world. As of September 2015, there are more than 470,000 photographs, vectors and illustrations. Users can search by keywords or browse by various categories.
Developed by Brooklyn-based interface and experience designer, Jeffrey Betts, MMT is a site that contains high-resolution photos on public domain. Users can search by keyword or browse by different categories.
Google developed a visual language that “synthesizes the classic principles of good design with the innovation and possibility of technology and science”, which they called “material design”. Google retains a living document of specifications of the material design. As part of the specifications, Google provides a library of system icons, created based on Google’s design principles, for download. Users can search or browse the icons arranged by categories.