Aurora Flight Sciences most recently made headlines with a test of its MarsFlyer, a prototype aircraft that, in its final version, will be used by NASA to gather information about the Red Planet's atmosphere. The company's Web site has information about this and many other specialized aircraft, as well as a video from the tail of the MarsFlyer as it was dropped from 100,000 feet. Specific...

The Federation of American Scientists offers this unique perspective into classified government aircraft, "some of which actually exist, some of which certainly do not, and all of which are fascinating in a way." This site is divided into two main sections. The first provides insight into several aircraft that were initially shrouded in secrecy but have since been revealed to the public. Some...

First aired on February 4, 2003, Battle of the X-Planes looked at the development of the Joint Strike Fighter (JSF). The JSF is intended to be the next-generation military jet for the US, and Boeing and Lockheed Martin are vying to have their respective version chosen by the government. This is the companion site to the NOVA episode. Many interactive features, interviews, and articles attest to...