September 6, 1957
Nevada Range: Operation PlumbBob, nuclear detonation from a 152m “Wheeler” balloon: the device weighs only 72kg and will enable the construction of 0.01-6 Kton “Davy Crockett” surface-to-air nuclear missiles that can be operated by a single person.
August 27, 1957
Operation Plumbob, United States. During the Pascal-B nuclear test of the Plumbob test series, a 1,000-ton underground test, images from high-speed cameras show a 2,000-ton manhole cover being shot upward at a speed of at least 66 km/s (only one frame shows it in flight).
August 21, 1957
Baikonur, 12:25 p.m. First successful launch of an ICBM. It was the Soviet R-7 Semyorka.
July 19, 1957
Nevada Range: Operation PlumbBob, nuclear detonation from a 6100m “John” rocket: 1.7Kton; five volunteers were below ground zero; the test was to test the device’s ability to destroy fleets of Soviet bombers.
July 5, 1957
Nevada Range: Operation PlumbBob, 457m balloon nuclear detonation “Hood”: 74Kton; thermonuclear (fusion) bomb: it is the largest atmospheric nuclear test ever carried out in the continental United States; 900 soldiers and 124 planes and helicopters are advanced towards ground zero with a radioactivity of 100
April 1957
The ABMA begins studies on a booster with a thrust of 6,800,000 N (680 ton); it is initially called Super-Jupiter and then renamed Saturn.
late 1956
The US Air Force begins the WS117L (Weapon System 117L) program. This is the first space-based photographic reconnaissance system. It will later evolve into the CORONA spy satellites (initially known by the covert acronym Discoverer). CORONA will be managed by the US Air Force and
November 8, 1956
Hungary: Kadar overthrows Nagy, ruling for 32 years (effectively until the end of the Cold War).
November 4, 1956
5:00 a.m. Hungary: Soviet armored troops enter Hungary with 5,000 tanks and 75,000 men.
November 1, 1956
Nobel Prize in Physics to William Shockley, John Bardeen, Walter Houser Brattain
October 31, 1956
Escalating Suez Canal Crisis On October 31, 1956, Britain and France bombed Egypt in retaliation for its blockade of their shipping in the Suez Canal. The attack came two days after Israel invaded Egypt, conquering the Gaza Strip and advancing through the Sinai to the
October 29 – November 6, 1956
Second Arab-Israeli war, with French and British intervention against Egypt, stopped by international condemnation (including the USA); the Israelis reach the Suez Canal which they occupy for a year
October 23, 1956
Beginning of the Hungarian Revolution On October 23, 1956, students, intellectuals, and workers took to the streets of Budapest demanding the end of Soviet rule and the communist government. On November 4, thousands of Soviet tanks entered the city to quell the uprising, which had
November 1955 – January 1956
Project 56. The components of four American nuclear bombs are subjected to safety tests in the Nevada desert, to certify their intrinsic safety in the event, for example, of an emergency landing of nuclear bombers, resulting in a fire on board. Only one of the
July 17, 1955
The DisneyLand amusement park opens in Anaheim, a former orange grove, 40 km from Los Angeles (now fully incorporated into the metropolis).
July 9, 1955
John von Neumann collapses while on the phone with Lewis Strauss. He will be diagnosed with bone cancer and undergo emergency surgery. He will be confined to a wheelchair, but will continue to produce and work, writing the book “The Computer and the Brain,” published
April 18, 1955
1:15 a.m.: Five days after his aneurysm ruptured, Albert Einstein dies at Princeton Hospital; he refuses the risky surgery: “I want to go when I want; it’s in bad taste to artificially prolong life.”
April 5, 1955
Washington, DC. Pauline Goebel, secretary and financier of Harold Jesse Berney for his (alleged) trips to Venus (yes, you read that right), receives a phone call. The caller claims to be His Majesty Prince Ucelles of the planet Venus, and says that Berney is very
1954 – 1955
JRR Tolkien publishes the Lord of the Rings trilogy in England, which will become required reading in all American middle schools.
June 7, 1954
Alan Turing committed suicide in Wilmslow, Cheshire, UK. He died by ingesting an apple poisoned with potassium cyanide, in keeping with his eccentric nature and inspired by the Snow White fairy tale he had loved since childhood. His mother claimed that her son, with dirty
December 11, 1953
Bruno Augenstein of the RAND Corporation delivers a report concluding that the development of nuclear-tipped intercontinental ballistic missiles (ICBMs) should be a priority. After some revisions, the final report (delivered on February 8, 1954) will be titled “A Revised Development Program for Ballistic Missiles of
August 22, 1953
Iran. The Shah of Persia, Mohammad Reza Pahlavi, returns to Tehran. The brief reign of the lawyer Mohammad Mosaddegh or Mosaddeq[a] (Persian: مُحَمَد مُصَدِق), who had been elected by the Iranian parliament two years earlier, ends. He had nationalized the AIOC (Anglo Iranian Oil Company),
April 28, 1952
The Treaty of San Francisco comes into force between Japan and the nations that suffered its aggression during World War II. The reparations will be relatively modest compared to those imposed on Germany in World War I: $550 million to the Philippines, $300 million to
April 8, 1952
United States. President Truman signs a government order nationalizing American steel mills, for reasons of national security, for the Korean War. This provokes a strong internal reaction, not only from the Republican opposition. Lyndon Johnson declares this to be typical of practices that lead to
March 1952
To decapitate the nascent European Community and prevent German rearmament, Stalin presented five conditions for German reunification: the withdrawal of all occupying forces, neutrality, Germany unified within the 1945 borders, the removal of limits on the development of the Ruhr, and the right to its
May 30, 1951
South Korea. MacArthur’s successor, General Matthew Ridgway, managed to push the North Koreans and Chinese back above the 38th parallel, and thus retake Seoul.
May 9, 1951
Eniwetok Atoll: Operation GreenHouse, 61m “George” tower thermonuclear detonation: 225Kton; designed by Edward Teller, it has a deuterium-tritium fusion trigger and the trigger itself is due to the implosion of the device due to radiation rather than high explosives.
April 22 – May 22, 1951
Seoul, South Korea. The Chinese attack with a force of 700,000 soldiers to retake Seoul. This would be the fifth time the conflict has changed hands in less than two years. This time, the attack fails. Between 110,000 and 161,000 attackers die, including approximately 90,000
April 1951
General MacArthur wanted to drive the communists out of Korea and transfer the war to China; Truman, however, favored a policy of containment: MacArthur was stripped of his command of the armed forces.
April 28, 1951
Iran. Lawyer Mohammad Mosaddegh or Mosaddeq[a] (Persian: مُحَمَد مُصَدِق) becomes prime minister, elected by the Iranian parliament. He nationalizes the AIOC (Anglo Iranian Oil Company), the concessionaire of the oil fields. This event leads to a British boycott of Iranian oil, a serious economic crisis,
April 15, 1951
After the Rosenbergs were sentenced to death for espionage, Joel Barr and Alfred Sarant, who had been part of Julius Rosenberg’s spy ring since the 1930s, realized the net was closing in on them and left the United States for the Soviet Union, where they
April 15, 1951
Julius and Ethel Rosenberg sentenced to death on charges of nuclear espionage.
April 5, 1951
South Korea. MacArthur once again proposes to Truman to involve Chan Kai Shek and Taiwan in the Korean War, opening a second front in mainland China. The public request infuriates Truman, who accuses him of “rank insubordination.” He declares to his aides: “That son of
November 11, 1950
The Soviet Union (not officially involved in the conflict) begins to provide the necessary air cover for Chinese military maneuvers in North Korea; Soviet fighters fly without insignia and pilots without uniforms and insignia.
October 1950
Alan Turing publishes “Computing Machinery and Intelligence” in the journal Mind. He describes what will become known as the Turing Test, which he calls “The Imitation Game.”
October 26, 1950
American and South Korean troops in Korea reach the Yalu River on the Chinese border
October 25, 1950
First Chinese troops cross the border into North Korea to fight against United Nations troops (mostly Americans and South Koreans)
October 1, 1950
Korea. Stalin formally requests Mao, in a message, for the Chinese army to intervene in force to defend North Korea.
September 12, 1950
American troops stage a mock landing south of Seoul to divert North Korean attention from the real landing at Inchon, near Seoul.
August 15, 1950
Earthquake in India (Tibet): 8.7 on the Richter scale, 1,530 deaths
50s-60s-70s-80s
During the Cold War, a synergistic triangular relationship was established in the United States between government, industry, and academia. The Department of Defense and the National Science Foundation became the main sponsors of basic research, spending as much as private industry (by 2010, this figure



