NASA on The Commons uses the website Flickr to post photos from the archives at NASA Images. As explained on the “About” page, NASA posts these NASA Images photos on Flickr to reach a wider audience, as well as to encourage the audience to interact with the images through tagging and commenting. Some photos feature human subjects such as astronauts, politicians who supported space programs, and famous astrophysicists and aerospace engineers. Other photos feature celestial objects such as planets and the Sun, as a way to emphasize Earth as part of a larger, magnificent solar system. The overwhelming majority of these photos, however, showcase our aerospace technology, our feats of engineering that have allowed us to explore and document the solar system.