Therefore , a large area for the fall of the rocket is required for safety reasons .
A serious disadvantage is that balloons can not be steered and consequently neither the direction the launched rocket moves in nor the region where it will fall is easily adjustable .
A large area for the fall of the rocket is required for safety reasons .
A serious disadvantage is that balloons can not be steered and consequently neither the direction the launched rocket moves in nor the region where it will fall is easily adjustable .