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The world's worst nuclear disaster occurs when the fourth reactor at the Chernobyl nuclear power station in the Soviet U

The world's worst nuclear disaster occurs when the fourth reactor at the Chernobyl nuclear power station in the Soviet Union explodes, resulting in 31 deaths and radioactive contamination spreading to much of Western Europe

A nuclear and radiation accident is defined by the International Atomic Energy Agency (IAEA) as "an event that has led to significant consequences to people, the environment or the facility." Examples include lethal effects to individuals, large radioactivity release to the environment, or a reactor core melt. The prime example of a "major nuclear accident" is one in which a reactor core is damaged and significant amounts of radioactive isotopes are released, such as in the Chernobyl disaster in 1986 and Fukushima nuclear accident in 2011.

The impact of nuclear accidents has been a topic of debate since the first nuclear reactors were constructed in 1954 and has been a key factor in public concern about nuclear facilities.

Historical Significance

A nuclear and radiation accident is defined by the International Atomic Energy Agency (IAEA) as "an event that has led to significant consequences to people, the environment or the facility.

Events Before

  1. 'Nordu.net' is registered as the world's first domain name on the internet

    This is a list of the oldest extant registered generic top-level domains used in the Domain Name System of the Internet. Until 1986, Domain Registration was limited to organizations with access to…

  2. Israel's government confirms the resettlement of 10,000 Ethiopian Jews

    Israel's government confirms the resettlement of 10,000 Ethiopian Jews

  3. Baseball player Darryl Strawberry (22) weds Lisa Andrews

    Baseball player Darryl Strawberry (22) weds Lisa Andrews

  4. Charity single "We Are the World" recorded by supergroup USA for Africa (Michael Jackson, Lionel Richie, Quincy Jones, B

    Charity single "We Are the World" recorded by supergroup USA for Africa (Michael Jackson, Lionel Richie, Quincy Jones, Bruce Springsteen, Stevie Wonder, and other pop stars)

  5. South African President P. W. Botha offers to free Nelson Mandela if he denounces violence

    Nelson Rolihlahla Mandela was a South African anti-apartheid activist and statesman who was the first president of South Africa from 1994 to 1999.

Events After

  1. 60 bodies are recovered from the Dupont Plaza Hotel fire in Puerto Rico

    60 bodies are recovered from the Dupont Plaza Hotel fire in Puerto Rico

  2. Aretha Franklin becomes the first woman inducted into the Rock and Roll Hall of Fame

    Aretha Louise Franklin ( ə-REE-thə; March 25, 1942 – August 16, 2018) was an American singer, songwriter and pianist.

  3. Astronomers at the University of California witness the first observation of the birth of a galaxy

    Astronomers at the University of California witness the first observation of the birth of a galaxy

  4. Opera impresario Sir Rudolf Bing (85) weds Carroll Douglass (45); annulled in September, 1989

    Opera impresario Sir Rudolf Bing (85) weds Carroll Douglass (45); annulled in September, 1989

  5. Pennsylvania politician R. Budd Dwyer shoots and kills himself at a press conference on live national television, sparki

    Pennsylvania politician R. Budd Dwyer shoots and kills himself at a press conference on live national television, sparking debate about the boundaries of journalism

More from the 1980s

Fall of the Berlin Wall

The Berlin Wall falls as East Germany opens its borders, symbolizing the end of the Cold War and the beginning of German reunification.

politics governmentwars conflicts

Space Shuttle Challenger Disaster

The Space Shuttle Challenger breaks apart 73 seconds after launch, killing all seven crew members in one of the most devastating disasters in space exploration history.

space explorationscience technology

The "Epic in Miami," played in 85°F heat, sees the San Diego Chargers defeat the Miami Dolphins 41-38 in overtime in the

The "Epic in Miami," played in 85°F heat, sees the San Diego Chargers defeat the Miami Dolphins 41-38 in overtime in the AFC Divisional Playoff, setting numerous playoff scoring records

death

Bill Veeck dies

Bill Veeck baseball executive, known for american baseball executive, died on 1986-01-02. William Louis Veeck Jr.

Frequently Asked Questions

What happened on April 26, 1986?
A nuclear and radiation accident is defined by the International Atomic Energy Agency (IAEA) as "an event that has led to significant consequences to people, the environment or the facility." Examples include lethal effects to individuals, large radioactivity release to the environment, or a reactor core melt. The prime example of a "major nuclear accident" is one in which a reactor core is damaged and significant amounts of radioactive isotopes are released, such as in the Chernobyl disaster in 1986 and Fukushima nuclear accident in 2011. The impact of nuclear accidents has been a topic of debate since the first nuclear reactors were constructed in 1954 and has been a key factor in public concern about nuclear facilities.
Why is The world's worst nuclear disaster occurs when the fourth reactor at the Cher... significant?
A nuclear and radiation accident is defined by the International Atomic Energy Agency (IAEA) as "an event that has led to significant consequences to people, the environment or the facility.

Explore More

April 26 in HistoryYear 1986