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.
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 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.