Famed balloonist proposing huge inflatable solar updraft tower for observatory
Thursday, November 21, 2013 - 11:30
in Astronomy & Space
(Phys.org) —Famed balloonist Per Lindstrand (he crossed the Pacific Ocean in one with Richard Branson back in 1991) has told The Engineer that he is proposing a 1km high inflatable solar updraft tower to power the ALMA Observatory in Chile's Atacama Desert.