Instead, for its one and only test in 1961, Soviet scientists "downrated" the Tsar Bomba to around 50 megatons by swapping out uranium for lead in at least one of the bomb's stages.

Last year, the Russian nuclear energy agency, Rosatom, released a 30-minute, formerly secret documentary video about the detonation of the world's largest hydrogen bomb, dubbed "Tsar Bomba." ...

The Tsar Bomba, the largest and most powerful nuclear weapon ever detonated, remains an iconic and terrifying testament to the destructive power of nuclear energy. Developed by the Soviet Union during ...

The Tsar Bomba remains the most powerful nuclear bomb ever detonated, a weapon of unimaginable destruction. Designed by the Soviet Union in the 1960s, its explosive yield was 50 megatons of TNT, ...

This bomb blew the United States out of the water. Its yield was five times that of the B53 at 50 megatons. This means the Tsar Bomba, also known as Ivan would completely decimate the city of New ...

Tsar Bomba nuclear test was the biggest ever: Since Russia first invaded Ukraine nearly two years ago, President Vladimir Putin and other Kremlin officials have routinely threatened nuclear ...

Tsar Bomba: The World's Most Powerful Nuclear Weapon. By Ella ... The USSR had just detonated Tsar Bomba, a hydrogen bomb with a yield of 50 megatons—more than 3,000 times the power of the bomb ...

WARNING: DISTRESSING CONTENT. As fears over the potential threat of nuclear warfare continue to escalate, the Mirror takes a ...

Next month it will have been 80 years since the Japanese cities of Hiroshima and Nagasaki were devastated by nuclear attacks.

In 1961, Russia detonated the Tsar Bomba, the most powerful nuke in history, over a remote Arctic island. New footage has been declassified and shared on YouTube.