When a plane is flown along a parabolic trajectory, passengers are in free fall and therefore experience an absence of weight for approximately 25 seconds.
The absence of weight can be created on board special airplanes flown in particular trajectories.
When a plane is flown along a parabolic trajectory, passengers are in free fall and therefore experience an absence of weight for approximately 25 seconds.
Agencies from many countries own airplanes specially equipped for this flight condition
Weightlessness training. A BBC movie
