by Jeff Cunningham
Ni hao and welcome back to our ongoing look at the science and technology of everyone’s favorite cancelled TV show, Firefly. Today, we’re slipping the surly bonds of Earth-That-Was to look at gravity-defying vehicles and artificial gravity generators in space. As always, we’ll start by setting boundaries: We’re defining “anti-gravity” or gravity-defying craft as vehicles that travel hovering a finite distance from a gravity-generating point mass (such as the center of a planet) without generating any thrust or propulsion. That last part is the kicker: Rockets, helicopters, and Serenity herself don’t count, because they all get around by propelling something (air or superheated gases) downwards in order to push themselves upwards. Continue Reading
Take Back the Sky 