NASA's History Office Web site is offering a publication for public review entitled Looking Backward, Looking Forward: Forty Years of US Human Spaceflight Symposium. The two hundred and fifty page document chronicles NASA's history from the Sputnik era to the present including insights from Buzz Aldrin, perspectives on the future, the international space station, and much more. Readers will enjoy...

In a May 2003 online feature of Popular Science magazine, several potential candidates for replacing NASA's aging space shuttles are examined. Although budget problems have made the outlook somewhat bleak for any new designs in the near future, a number of existing proposals are outlined. An especially eye-catching concept is an enormous flying wing, which would climb to 40,000 feet and serve as a...