Description: It can be so frustrating to put great effort into something, and then to have your work and achievements called into question. I can't begin to imagine how frustrated Samuel Pierpont Langley was in 1903. By that time, he had spent over forty years studying astrophysics and aerodynamics. His work on astronomically-derived time measurement in the late 1860's is the heart of the
Description: When tragedy struck during the space shuttle era, mourners found a place to honor the fallen astronauts of the tragic Challenger and Columbia flights at Smithsonian’s National Air and Space Museum.