Year

1970

7 sourced events from this year.

Events

1970 Timeline

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Law20th CenturyGlobal

Nuclear Non-Proliferation Treaty Takes Effect

In the aftermath of World War II and amid accelerating nuclear arms races between the United States and Soviet Union, international efforts focused on preventing further proliferation of atomic weapons. The Treaty on the Non-Proliferation of Nuclear Weapons had been negotiated at the United Nations and opened for signature in 1968, with the five recognized nuclear powers and dozens of other states committing to its terms. Ratification by the required number of nations, including the depositary governments, was completed by early 1970. On March 5, 1970, the NPT officially entered into force, establishing obligations for non-nuclear states to forgo weapons development in exchange for peaceful nuclear technology access and disarmament commitments from nuclear powers. The treaty quickly attracted widespread adherence,...

Exploration20th CenturyNorth America

Apollo 13 Launches Toward the Moon

NASA launched Apollo 13 on April 11, 1970, from Kennedy Space Center as the third planned lunar landing mission. Commanded by Jim Lovell with Jack Swigert and Fred Haise, the crew aimed for the Fra Mauro highlands. The Saturn V rocket performed nominally at liftoff, placing the spacecraft on a translunar trajectory. Two days later, an oxygen tank explosion in the service module crippled the electrical and life-support systems. The crew used the lunar module as a lifeboat to loop around the Moon and return safely to Earth on April 17, demonstrating remarkable improvisation under crisis.

Technology20th CenturyGlobal

Apollo 13 Oxygen Tank Explodes in Space

Launched on April 11 as NASA's third planned lunar landing mission, Apollo 13 carried astronauts Jim Lovell, Jack Swigert, and Fred Haise toward the Moon. Two days into the flight, on April 13, a damaged wire in an oxygen tank short-circuited during a routine stir, igniting insulation and causing a massive explosion that ruptured the service module. The blast disabled fuel cells, venting oxygen and crippling power and life support systems nearly 200,000 miles from Earth. Swigert famously reported, “Houston, we’ve had a problem here.” The crew aborted the landing, used the lunar module as a lifeboat, and executed a risky circumlunar trajectory to return safely on April 17.

Exploration20th CenturyGlobal

Apollo 13 Crew Returns Safely to Earth

Apollo 13 launched on April 11, 1970, as NASA's third lunar landing attempt with astronauts Jim Lovell, Jack Swigert, and Fred Haise aboard. Two days into the mission an oxygen tank explosion crippled the service module, forcing the crew to use the lunar module as a lifeboat while aborting the landing. Ground controllers in Houston improvised solutions for power, water, and carbon dioxide removal over the next four days. On April 17, 1970, the command module reentered Earth's atmosphere and splashed down safely in the Pacific Ocean, where the crew was recovered by USS Iwo Jima.

Other20th CenturyGlobal

First Earth Day Mobilizes Millions

Amid growing awareness of pollution, highlighted by events like the 1969 Santa Barbara oil spill and the Cuyahoga River fire, U.S. Senator Gaylord Nelson sought to harness public concern. Inspired by campus teach-ins against the Vietnam War, he proposed a nationwide environmental event. Organized by Denis Hayes and supported by bipartisan figures including Congressman Pete McCloskey, the first Earth Day occurred on April 22, 1970. An estimated 20 million Americans participated in rallies, teach-ins, and demonstrations across the country, from college campuses to city streets. The massive turnout pressured policymakers and directly contributed to the creation of the Environmental Protection Agency later that year.

Civil Rights20th CenturyNorth America

National Guard Kills Students at Kent State

Opposition to the Vietnam War reached a fever pitch in spring 1970 after President Nixon announced the U.S. invasion of Cambodia, prompting widespread campus protests. At Kent State University in Ohio, demonstrations against the war and the presence of National Guard troops on campus grew over several days amid reports of property damage and arson. On May 4, a large rally assembled on the commons despite a ban; Guardsmen advanced to disperse the crowd with tear gas and bayonets. As students retreated, a group of Guardsmen turned and fired approximately 67 rounds over 13 seconds into the crowd, killing four unarmed students—Allison Krause, Jeffrey Miller, Sandra Scheuer, and William Schroeder—and wounding nine others. The shootings occurred during a period of...

Civil Rights20th CenturyNorth America

Chicago Hosts First Pride Parade

Following the 1969 Stonewall uprising in New York, LGBTQ+ activists across the United States sought public visibility and organized demonstrations for equality. In Chicago, a small group of organizers planned a march to commemorate the anniversary and demand civil rights. On June 27, 1970, participants gathered at Washington Square Park and marched through downtown streets to the Water Tower and Civic Center Plaza. The event drew several hundred people in what began as a protest march rather than a festive parade. It faced limited opposition but marked one of the earliest large-scale public assertions of LGBTQ+ identity in the Midwest. The march laid the foundation for annual Pride events that grew dramatically in subsequent years.