[ad_1]
The detonation of the first nuclear bombs over Hiroshima and Nagasaki in August 1945 is seared into our collective reminiscence, and the world has been haunted by the prospect of a devastating nuclear apocalypse ever since. Much less well-known however equally important from a nuclear arms race standpoint was the Soviet Union’s profitable detonation of hydrogen “superbomb” within the wee hours of October 30, 1961.
Dubbed “Tsar Bomba” (loosely translated, “Emperor of Bombs”), it was the dimensions of a small college bus—it would not even match inside a bomber and needed to be slung beneath the stomach of the aircraft. The 60,000-pound (27 metric tons) take a look at bomb’s explosive yield was 50 million tons (50 megatons) of TNT, though the design had a most explosive yield of 100 million tons (100 megatons).
The US had carried out the primary profitable take a look at of a hydrogen bomb (codename: Ivy Mike) in 1954 and had been pondering the event of much more highly effective hydrogen superbombs. However the Soviets’ profitable take a look at lent larger urgency to the matter. In the end, President John F. Kennedy opted for diplomacy, signing the Partial Nuclear Check Ban Treaty on October 7, 1963.
However US nuclear coverage—and therefore world historical past—may need turned out very in a different way, in accordance with Alex Wellerstein, a historian of science on the Stevens Institute of Expertise in New Jersey and creator of Restricted Knowledge: The Historical past of Nuclear Secrecy in the USA, launched earlier this yr. He additionally maintains the NUKEMAP, an interactive software that permits customers to mannequin the impression of assorted varieties of nuclear weapons on the geographical location of their selection.
Wellerstein has analyzed not too long ago declassified paperwork pertaining to the US response to Tsar Bomba in the course of the Kennedy administration. He described his conclusions in a captivating article not too long ago printed within the Bulletin of the Atomic Scientists, coinciding with the sixtieth anniversary of the take a look at.
Wellerstein provides a very vivid description of the Tsar Bomba detonation in his introduction:
At 11:32 a.m., the bombardier launched the weapon. Because the bomb fell, an unlimited parachute unfurled to gradual its descent, giving the pilot time to retreat to a secure distance. A minute or so later, the bomb detonated. A cameraman watching from the island recalled:
A fireplace-red ball of monumental dimension rose and grew. It grew bigger and bigger, and when it reached monumental dimension, it went up. Behind it, like a funnel, the entire earth appeared to be drawn in. The sight was incredible, unreal, and the fireball seemed like another planet. It was an unearthly spectacle!
The flash alone lasted greater than a minute. The fireball expanded to almost six miles in diameter—massive sufficient to incorporate your entire city core of Washington or San Francisco, or all of midtown and downtown Manhattan. Over a number of minutes it rose and mushroomed into a large cloud. Inside ten minutes, it had reached a top of 42 miles and a diameter of some 60 miles. One civilian witness remarked that it was “as if the Earth was killed.”
[ad_2]
