Directorios

Enlace: http://www.pbs.org/wgbh/nova/balloon/

Descripción: PBS NOVA Online.
«To fly non-stop around the world in a balloon was one of aviation's last great challenges - a challenge that was finally met on March 20, 1999 by Bertran Piccard of Switzerland and Brian Jones of Britain. On this site, you can delve into the history of science and ballooning, follow the attempts of earlier balloonists to make the round-the-world flight, and more.»