Home Tech Sorry, Sandra Bullock: A Fire Extinguisher Is a Lousy ThrusterTechSorry, Sandra Bullock: A Fire Extinguisher Is a Lousy ThrusterFebruary 12, 2019135FacebookTwitterPinterestWhatsApp In the movie *Gravity*, Sandra Bullock uses a fire extinguisher to maneuver in space. Controlling it is much, much harder than it looks.