Carl Sagan's Solar Sail Is Ready For Its First Test Flight

“There’s just a tremendously exciting prospect called solar sailing. [It] travels on the radiation and particles that come out of the sun, the wind from the sun. Because it has a constant acceleration, it can get you around the inner part of the solar system a lot faster...than the usual sorts of rocket propulsion.”
by José Lourenço via Facebook at May 10, 2015 at 09:41AM
http://gizmo.do/sccXwxB