Pathfinder research aircraft's wing structure clearly defined as it soared under a clear blue sky during a test flight July 27, 1995, from Dryden Flight Research, Edwards, California. Pathfinder was a lightweight, solar-powered, remotely piloted flying wing aircraft used demonstrate the use of solar power for long- duration, high-altitude flight (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.