Former U.S. President Lyndon B. Johnson, architect of the Civil Rights Act and the Vietnam War escalation, died of a heart attack at his Texas ranch.

The U.S. Supreme Court ruled 7-2 that the Constitution protects a woman's right to choose to have an abortion, striking down state bans nationwide.

The United States, North Vietnam, South Vietnam, and the Viet Cong sign the Paris Peace Accords, ending direct American combat involvement in Vietnam.

The United States, North Vietnam, South Vietnam, and the Viet Cong signed the Paris Peace Accords, ending direct American military involvement in the Vietnam War.

Pink Floyd released 'The Dark Side of the Moon,' a concept album exploring mental illness, mortality, and time that would spend a record-breaking 741 weeks on the Billboard charts.

President Nixon told aides on tape "I don't give a shit what happens" while discussing hush money for Watergate defendants, evidence that later fueled his impeachment case.

The final American combat troops departed South Vietnam, formally ending direct US military involvement in the Vietnam War after nearly a decade of combat.

NASA launched Skylab, America's first space station, atop a Saturn V rocket, only to discover it had lost a meteoroid shield and one solar panel during ascent.

NASA launched Skylab, America's first space station, atop a modified Saturn V rocket from Cape Kennedy, but damage during ascent nearly doomed the mission.

American and Soviet space officials finalized technical protocols in Moscow for the Apollo-Soyuz Test Project, the first joint US-Soviet human spaceflight.

Billie Jean King founded the Women's Tennis Association, unifying women players to demand equal prize money and professional treatment.

The Bahamas became a fully sovereign nation within the Commonwealth, ending nearly 300 years of British colonial rule over the Caribbean archipelago.

A Senate subpoena demanded President Richard Nixon turn over secret White House tape recordings, intensifying the Watergate crisis that would end his presidency.

As a bank robbery hostage crisis in Stockholm dragged toward its resolution, criminologists coined the term 'Stockholm syndrome' to describe hostages who defended their captors.

DJ Kool Herc hosted a back-to-school party in a Bronx apartment building recreation room, using his 'breakbeat' turntable technique in an event now considered hip-hop's founding moment.

General Augusto Pinochet's military junta stormed the presidential palace, ending Salvador Allende's elected socialist government and his life.

Days after the Pinochet coup, poet Pablo Neruda lay dying in a Santiago clinic as soldiers raided his homes, an emblem of Chile's violent turn.

Egypt and Syria launched a coordinated surprise attack on Israel during the holiest Jewish holiday, triggering a war that reshaped Middle East diplomacy.

NASA launched Skylab 4, sending three astronauts on the longest American spaceflight to date, an 84-day mission plagued by a famous crew strike.

NASA launched Skylab 4, sending three astronauts on an 84-day mission that would become the longest American spaceflight of its era.

NASA launched Skylab 4, sending three astronauts on what became, at the time, the longest human spaceflight in history at 84 days.

Astronauts Gerald Carr, William Pogue, and Edward Gibson returned to Earth after an 84-day mission, then the longest spaceflight in history.