When the hydrogen bomb was tested on the arctic archipelago of Novaya Zemlya on October 30, 1961, it created the most powerful man-made explosion ever, equivalent to 50 megatons of TNT.
An opening documentary with a caption declaring it to be “Top Secret” was released by Russian nuclear energy agency Rosatom to mark the 75th anniversary of the nuclear industry.
The video shows the massive explosion from different angles and distances, and reveals some of the work involved in building the device.
According to the documentary, the Soviet bomber used to drop the aircraft was to be coated with a reflective white paint to protect it from the radiation of the explosion.
The bomb was also reportedly dropped with a huge parachute to allow the plane to get away enough before it exploded.
Tasr Bomba exploded 4 km above the ground and the explosion completely destroyed everything within a 35 km radius.
The explosion spread even further, destroying all buildings in a military town called Severny, 55 km away, and windows were reportedly cracked up to 900 km from zero point.
The shock wave was recorded by seismometers around the world, while the mushroom cloud rose 67 km into the atmosphere, seven times the height of Mount Everest.
Despite its terrifying power, the bomb was considered a gadget by US analysts, who viewed it as limited military use.
The real impact was geopolitical.
Following the fallout of nuclear material across Scandinavia, two years after the detonation, the United States and the Soviet Union signed a treaty banning nuclear tests unless they were underground.