On October 30, 1961, the Soviet Union detonated the Tsar Bomba, the most powerful nuclear weapon ever tested. Designed by physicist Andrei Sakharov, the bomb—officially called RDS-220—was originally intended to be 100 megatons, but it was scaled back to 50 megatons for the test. The explosion was more than 3,000 times stronger than the atomic bomb dropped on Hiroshima in 1945. To carry the massive 27-ton device, a Tu-95 bomber was specially modified, with its cargo doors removed, fuselage lightened, and fuel capacity reduced to accommodate the bomb’s weight. The blast created a shock wave that traveled around the Earth three times, and the blinding flash was visible over 1,000 kilometers away. The mushroom cloud from the explosion rose to 64 kilometers, roughly seven times the height of Mount Everest. The effects of the blast were felt far beyond the test site, with the nearby military town of Severny nearly destroyed, located 55 kilometers from the epicenter. At 300 kilometers away, the heat from the explosion was still perceptible, and third-degree burns were possible up to 100 kilometers from the blast. Windows in villages up to 900 kilometers away were shattered, and due to atmospheric conditions, the shock wave was even felt in northern Norway and Finland. Although the tested version of the Tsar Bomba was a scaled-down version of the original 100-megaton design, it still delivered a massive 57 megatons of explosive power, with 50 megatons measured in the test. According to declassified documents from the Russian nuclear agency Rosatom, this single test would have contributed about 25% to the total global radioactive fallout since the beginning of the nuclear age. However, the Tsar Bomba had no practical military use due to its enormous size and weight. Its primary purpose was to showcase the Soviet Union’s technological capabilities in the intense nuclear arms race of the Cold War. The Tsar Bomba’s explosion surpassed the previous record held by the United States, which had tested the Castle Bravo hydrogen bomb in 1954 with a yield of 15 megatons. The images of the Tsar Bomba’s detonation were not publicly released until 2020, when Russia shared them for the first time. These images offer a rare glimpse into the most powerful human-made explosion in history, a testament to both the destructive potential of nuclear weapons and the technological achievements of the Cold War era.