Skydiving is the technique of launching humans or objects from a certain height using a parachute to cushion the impact of the landing.
It can be done from any aircraft such as an airplane, helicopter, hot air balloon or from a fixed object. The latter is considered the BASE jump mode for its acronym in English (building, antenna, span and earth). In some cases the parachute is opened immediately when leaving the aircraft or fixed object and in other cases a controlled free fall is made before performing manual or assisted opening depending on the case.
