“Tsar Bomba is the nickname for the AN602 hydrogen bomb, the most powerful nuclear weapon ever detonated. Its test on October 30 1961 remains the most powerful artificial explosion in human history. It was also referred to as Kuz'kina Mat' (Russian: Кузькина мать, Kuzma's mother), referring to Nikita Khrushchev's promise to show the United States a “Kuz'kina Mat'” at the 1960 United Nations General Assembly. Developed by the Soviet Union, the bomb had the yield of 50 megaton TNT (210 PJ). Only one bomb of this type was ever officially built and it was detonated in the Novaya Zemlya archipelago, at Sukhoy Nos. The remaining bomb casings are located at the Russian Atomic Weapon Museum, Sarov (Arzamas-16), and the Museum of Nuclear Weapons, All-Russian Research Institute of Technical Physics, Snezhinsk (Chelyabinsk-70). Neither of these casings has the same antenna configuration as the device that was tested”. – Wikipedia

Shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), is on display in Moscow, Russia, August 31, 2015. The shell is part of an exhibition organized by the state nuclear corporation Rosatom. (Photo by Maxim Zmeyev/Reuters)

Shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), is on display in Moscow, Russia, August 31, 2015. (Photo by Maxim Zmeyev/Reuters)

A man walks past a shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), in Moscow, Russia, August 31, 2015. (Photo by Maxim Zmeyev/Reuters)

Shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), is on display in Moscow, Russia, August 31, 2015. (Photo by Maxim Zmeyev/Reuters)

Shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), is on display in Moscow, Russia, August 31, 2015. (Photo by Maxim Zmeyev/Reuters)

Shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), is on display in Moscow, Russia, August 31, 2015. (Photo by Maxim Zmeyev/Reuters)

Shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), is on display in Moscow, Russia, August 31, 2015. (Photo by Maxim Zmeyev/Reuters)

A man takes a selfie in front of a shell, which is the replica of the biggest detonated Soviet nuclear bomb AN-602 (Tsar-Bomb), in Moscow, Russia, August 31, 2015. (Photo by Maxim Zmeyev/Reuters)