This one is going to kill a small portion of your day. NASA Commons, a collection from roughly the last 50 years of NASA’s history. From meetings with JFK to experimental aircraft launches, it’s a somewhat behind-the-scenes look at the space agency. Check out the Flickr page or read a little more about it on Gizmodo. I love in this first photo how it’s basically just some nerds out in the desert riding bikes around under their homemade solar powered aircraft. I bet that was a fun day.