What was the biggest man made explosion in the world?

The largest man-made explosion in history was the detonation of the Tsar Bomba by the Soviet Union on October 30, 1961, a hydrogen bomb with a yield of around 50-58 megatons, making it the most powerful nuclear device ever tested and the single most powerful human-made explosion. For non-nuclear events, the 1917 Halifax Explosion was the largest before the atomic age, caused by a munitions ship collision, while the 1947 Texas City disaster was the deadliest industrial accident in U.S. history.
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What was the largest human made explosion?

The Tsar Bomba yield was approximately 1,570 times more powerful than the yield of the bombs dropped on Hiroshima and Nagasaki combined, and 10 times more powerful than all of the conventional weapons exploded during World War II.
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What is the biggest explosion known to man?

A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star. A supernova is the biggest explosion that humans have ever seen.
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Which bomb was bigger, Fatman or Little Boy?

Fat Man was bigger and more powerful than Little Boy, with a higher yield (21 kilotons vs. 15 kilotons of TNT) and greater diameter, despite Little Boy using more uranium fuel because of its less efficient gun-type design. Fat Man used plutonium in a complex implosion design, making it significantly more destructive in terms of blast force, though Little Boy's simpler design worked well for its single use.
 
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What was the largest unexplained explosion in history?

Tunguska event. The Tunguska event was a large explosion of between 3 and 50 megatons TNT equivalent that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of 30 June 1908.
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The largest man made explosions in history

Was Chernobyl worse than a nuke?

Yes, the Chernobyl disaster released significantly more radioactive material (hundreds of times more than Hiroshima) and caused broader, longer-lasting contamination, making it worse in terms of environmental impact and widespread health issues, but a nuclear bomb is far more destructive in its immediate explosive power and immediate casualties, as Chernobyl was a meltdown, not a nuclear detonation, releasing radioactive dust rather than a massive blast. 
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What was the largest accidental explosion in history?

In 1917, a French cargo ship fully loaded with explosives for World War I accidentally collided with a Belgian vessel in the harbor of Halifax, Canada. It exploded with more force than any man-made explosion before it, equivalent to roughly 3 kilotons of TNT.
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Did America have a third atomic bomb?

Yes, the U.S. had a third atomic bomb, nicknamed the "Third Shot," ready for use against Japan after Hiroshima and Nagasaki, but Japan surrendered before it could be dropped, halting further wartime use and shifting focus to future testing and production. This plutonium implosion bomb was similar to the "Fat Man" dropped on Nagasaki, and a fourth bomb was also in production, but the war's end prevented their deployment.
 
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Who has 90% of the world's nuclear weapons?

Number of nuclear warheads worldwide 2025

There were approximately 12,200 nuclear warheads worldwide as of January 2025, and almost 90 percent of them belong to two countries: Russia and the United States.
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What did Einstein say about Hiroshima?

Shortly after the atomic bombs were exploded over Hiroshima and Nagasaki1, Albert Einstein made this statement: “The time has come now, when man must give up war.
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What was the largest explosion in US history?

The Texas City disaster was an industrial accident that occurred on April 16, 1947, in the port of Texas City, Texas, United States, located in Galveston Bay. It was the deadliest industrial accident in U.S. history and one of history's largest non-nuclear explosions.
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How long after a nuke is it safe to go outside?

After a nuclear blast, you must shelter in place for at least 24 hours, ideally 48 hours or longer, in the most protective spot (basement/center of a building) as radiation drops rapidly but stays dangerous, waiting for official instructions on evacuation or when it's safe to briefly go out, with better shelter/longer waits (weeks/months) reducing risks significantly, especially for longer-term safety like gardening. 
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Is there a bomb bigger than the Tsar Bomba?

No, there has never been a nuclear bomb tested or deployed bigger than the Soviet Union's Tsar Bomba (RDS-220) (50-57 megatons), which remains the largest man-made explosion ever, though theoretically, larger, multi-stage thermonuclear devices could be built, but they are impractical and unbuilt due to logistics and diminishing returns for destruction, according to sources like Quora users and Big Think. 
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Could the Tsar Bomba destroy a city?

If such a weapon exploded in a large American city such as New York, Chicago, San Francisco, or Washington, D.C., their metropolitan areas plus large portions of their surrounding suburbs would be completely destroyed and nearly devoid of all life.
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What happened on 28 May 1998?

Chagai-I is the code name of five simultaneous underground nuclear tests conducted by Pakistan on 28 May 1998 at 15:15 PKT. The tests were performed at Ras Koh Hills in the Chagai District of Balochistan Province. Chagai-I was Pakistan's first public test of nuclear weapons.
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What is the most powerful explosion ever recorded?

The Tsar Bomba (code name: Ivan or Vanya, internal designation "AN602") was the most powerful nuclear weapon or weapon of any kind ever constructed and tested. A project of the Soviet Union, it was a thermonuclear aerial bomb, tested on 30 October 1961 at the Novaya Zemlya site in the country's far north.
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What is the deadliest weapon in the world?

The "most dangerous weapon" depends on the definition: Nuclear weapons (like the Tsar Bomba or modern ICBMs such as Russia's Satan 2) are the most destructive in single blasts, capable of mass extinction; Artillery/Small Arms (like the AK-47) have caused the most deaths historically due to widespread use; and emerging tech like Hypersonic missiles pose new threats. Overall, nuclear weapons represent humanity's greatest existential threat, while conventional weapons cause the most casualties in conflict.
 
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Who has better nukes, Russia or the USA?

Russia generally possesses a larger total number of nuclear warheads, while the U.S. maintains a highly advanced and modernized arsenal with comparable deployed strategic forces, making it difficult to declare one definitively "better," as their strengths lie in different areas, with both countries modernizing their delivery systems and holding the vast majority of the world's nuclear weapons. 
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Who gave Israel nuclear weapons?

No single country "gave" Israel nuclear weapons; rather, Israel developed its arsenal secretly with crucial technical assistance, particularly from France, which helped build the Dimona reactor in the 1950s and 60s, alongside other nations and intelligence gathering, leading to its undeclared nuclear capability. The UK also secretly supplied heavy water, and the US provided tacit approval under agreements with leaders like Richard Nixon, allowing Israel's program to advance significantly. 
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Is Hiroshima still radioactive?

No, Hiroshima is not still significantly radioactive; radiation levels are now comparable to normal background levels found in any other city, thanks to the quick dispersal of most radioactive material and natural decontamination by typhoons shortly after the 1945 bombing. The initial intense radioactivity decayed rapidly, and while some localized contamination occurred (like black rain), most fallout was dispersed in the atmosphere or washed away, allowing the city to be rebuilt and inhabited safely.
 
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Did Japan regret attacking the US?

Analysis and hindsight from historians over the years that have followed have led to a view that Japan regretted its decision to attack Pearl Harbor. In 2014, a biography on Emperor Hirohito revealed that the Japanese leader was wary of attacking the USA and that doing so could have consequences for his nation.
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Which bomb was bigger, Fat Man or Little Boy?

Fat Man was bigger and more powerful than Little Boy, with a higher yield (21 kilotons vs. 15 kilotons of TNT) and greater diameter, despite Little Boy using more uranium fuel because of its less efficient gun-type design. Fat Man used plutonium in a complex implosion design, making it significantly more destructive in terms of blast force, though Little Boy's simpler design worked well for its single use.
 
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How bad could Chernobyl have been?

Chernobyl could have been catastrophically worse, potentially rendering much of Europe uninhabitable, if the molten core (corium) had reached the water table, causing a massive steam explosion that would have spread far more radioactive material globally, leading to widespread acute radiation sickness, famine, societal collapse, and possibly triggering Cold War conflict; instead, heroic efforts by firefighters and divers prevented this worst-case scenario, limiting the fallout to Europe and causing severe localized contamination, significant cancer clusters (especially thyroid cancer in children), and profound psychological trauma, but averting continental devastation. 
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What is the strongest non-nuclear bomb?

The strongest non-nuclear bomb depends on the category, but the US GBU-43/B MOAB ("Mother of All Bombs") is famous as the most powerful air-delivered used in combat for its massive blast, while Russia's FOAB (Father of All Bombs) boasts a greater TNT equivalent yield, and Turkey's new Gazap bomb offers extreme thermobaric destruction with intense heat, making it a contender for the "most powerful" by effect.
 
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What is the largest explosion that takes place in space?

A supernova is the colossal explosion of a star. Scientists have identified several types of supernova. One type, called a “core-collapse” supernova, occurs in the last stage in the life of massive stars that are at least eight times larger than our Sun. As these stars burn the fuel in their cores, they produce heat.
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