A Flight of Helios . ... Credit Copyright: Carla Thomas, courtesy DFRC , NASA Explanation: An example of solar-powered flight, NASA's Helios aircraft flew almost one hundred years after the Wright brothers' historic flight on December 17, 1903. Pictured here at 3,000 meters in in skies northwest of Kauai , Hawaii , USA in August 2001, the remotely piloted Helios is traveling at about 40 kilometers per hour. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...