President Reagan postponed the State of the Union after Challenger

The Challenger disaster exposed flawed priorities in NASA's leadership

Reported issues with the shuttle's O-rings were deemed "acceptable risks" to proceed with the launch and ensure President Reagan could mention the success of Challenger in his State of the Union address. Postponing the launch would have also limited the publicity of educator Christa McAuliffe's live lesson from space.

Watch the Challenger disaster unfold live

The broadcast from Jan. 28, 1986, captures the moment Challenger broke apart, followed by stunned, unscripted coverage that includes mission control audio stating there had been an explosion as anchors struggled to convey what had just happened.

The Challenger disaster ended NASA's plan to fly ordinary Americans in space

The explosion of the Challenger halted NASA's civilian spaceflight ambitions for decades, including plans to send teachers, journalists, artists, and other nonastronauts into orbit—an effort aimed at building public support that quietly disappeared after the 1986 disaster.

Presidents invite guests to personalize the State of the Union

The tradition began in 1982 when Ronald Reagan honored Lenny Skutnik, who rescued a survivor from the icy Potomac after a plane crash. Since then, presidents have spotlighted a wide range of guests from Rosa Parks to Rush Limbaugh to humanize and reinforce policy themes.

The Challenger disaster delayed the launch of the Hubble Space Telescope

The 1986 explosion of the space shuttle shortly after liftoff killed seven crew members and grounded NASA's space fleet. Scientists used the downtime to refine ground control software and upgrade telescope instrument sensitivity, but maintaining the telescope's clean room storage cost NASA approximately $6M per month.

Lyndon Johnson moved the State of the Union into prime time

In January 1965, President Johnson moved the address to prime time to reach a larger TV audience, using it to promote his "Great Society" program—a push to reduce poverty, advance civil rights, and expand federal action in healthcare and economic opportunity.

The Teacher in Space program was launched in 1984 to highlight spaceflight in US classrooms

Announced by President Ronald Reagan, the program drew more than 11,000 teacher applicants nationwide. Christa McAuliffe was selected to fly on STS-51L, with plans to teach live lessons from orbit before the Challenger disaster ended the mission.

The opposition party to the president first delivered a televised response in 1966

Television networks first granted airtime to the out-of-power party in 1966, with Republicans Everett Dirksen and then-Representative Gerald R. Ford delivering the inaugural response. See a list of each opposition response to the State of the Union since then.

How a skin cancerous growth shifted an initially skeptical President Reagan on the ozone crisis

While a 1985 Nature study revealing the Antarctic ozone hole jolted public concern, Reagan's administration was more focused on the Cold War than on environmental policy. His health scare and the market potential for developing alternatives to chlorofluorocarbons helped turn the tide, leading to the Montreal Protocol's unanimous ratification by a bipartisan Senate in 1988.

A 'designated survivor' stays away from the State of the Union to ensure continuity of government

During major events like the State of the Union, one Cabinet member is kept at a secure location. This "designated survivor" would assume the presidency if a catastrophe eliminated those higher in the line of succession.

Amid the aftermath of Watergate, Gerald Ford declared that the state of the union was 'not good'

In his first State of the Union in January 1975, President Ford departed from the usual optimism, bluntly acknowledging recession, inflation, and public distrust as the country worked to recover from Nixon's resignation and the Watergate scandal.

Franklin D. Roosevelt was the first president to use the term 'State of the Union'

In 1934, President Roosevelt became the first president to formally call the annual address the "State of the Union," replacing the older title "Annual Message to Congress" and using the language from the Constitution.

Reagan’s 'tear down this wall' speech challenged Soviet control of Berlin

In 1987, President Ronald Reagan stood at the Brandenburg Gate of the Berlin Wall and urged Soviet leader Mikhail Gorbachev to “tear down this wall.” The speech became one of the most iconic moments of the Cold War and a symbol of growing pressure on the Eastern Bloc.

Ellison Onizuka was the first Asian American in space

A member of the 1986 Challenger mission crew, Onizuka was also the first Hawaiian in space, having been one of 35 people selected from a pool of 8,000 applicants for astronaut training in 1978.

Explore a deepfake speech of an alternate reality where Apollo 11 failed

As the Apollo 11 astronauts prepared for their journey to the moon, two speeches were drafted for President Richard Nixon: one to be delivered upon the astronauts' success and another to comfort the public in case of failure. This interactive explores the creation of a believable version of the latter.

Watch President Nixon's resignation speech

With impeachment looming, President Richard Nixon gave a televised Oval Office address. Watch this famous address in which Nixon announced his resignation due to the Watergate scandal—becoming the first and only president to resign from office.

The 25th Amendment clarified presidential succession and disability after JFK's assassination

Ratified in 1967, the 25th Amendment established procedures for replacing a vice president and transferring power when a president is incapacitated. It was designed to prevent leadership crises like those exposed after President Kennedy's death.

The space race ended with a handshake in orbit in 1975

On July 17, 1975, American and Soviet astronauts docked their spacecraft during the Apollo–Soyuz mission, symbolically ending the space race and marking the first joint spaceflight between Cold War rivals.

'Through this unique means, I convey to you and all mankind, America’s wish for peace on Earth and goodwill to men everywhere.'

- President Dwight Eisenhower (1890-1969) sending a message from space

President Barack Obama responded to Republican cheers about his final term during the State of the Union

In the 2015 address, after Republicans cheered when President Obama said he had "no more elections to run," his quick reply drew laughter from the crowd: "I know, because I won both."

In 1979, Iranian students seized the US Embassy in Tehran, holding 52 Americans hostage for 444 days

Outraged by the US decision to allow the exiled Shah to enter the United States for medical treatment, student protesters stormed the embassy in November 1979. The crisis paralyzed the Carter presidency and ended with a negotiated release on the day of Ronald Reagan's inauguration.

Chernobyl pushed the world to create rapid-alert systems for nuclear accidents

In the aftermath of the disaster, nations adopted new agreements requiring immediate international notification of nuclear accidents. They coordinated emergency assistance—efforts led by the International Atomic Energy Agency to prevent future disasters from being concealed when radiation emergencies occur.

The tragic death of Dale Earnhardt Sr. changed NASCAR safety forever

When Michael Waltrip crossed the finish line at the 2001 Daytona 500, it was his first win. But the celebrations quickly turned to sorrow when everyone learned that Dale Earnhardt Sr. had died in a final-lap crash. Within eight months after the collision, nearly every driver wore head-and-neck restraints before a mandate took effect.

The White House was almost entirely rebuilt from 1948 to 1952

Structural failure forced President Harry Truman to vacate the White House in 1948. Engineers gutted the building, keeping only its exterior walls, and rebuilt the interior with a new steel frame, modern utilities, and reinforced foundations by 1952.

In 2025, President Donald Trump signed an order shrinking the Department of Education

On March 20, 2025, President Donald Trump issued an executive order to “take all necessary steps to facilitate the closure” of the U.S. Department of Education, though complete dismantlement requires congressional approval.

Watch contemporary footage covering the US-backed Shah of Iran fleeing the country in the face of the 1979 Iranian Revolution

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

Jimmy Carter signed a 1978 bill that legalized home brewing, a move credited with kick-starting the craft beer industry.

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

In 1945, Surrealist artist Salvador Dalí and legendary animator Walt Disney began collaborating on a short film that was not completed until 2003, years after both men had died.

View the ten deadliest tornadoes in US history.

Comedy legend Catherine O'Hara, star of 'Schitt's Creek' and 'Home Alone,' quit 'Saturday Night Live' after just one week to return to her old job.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

Fireworks-related ER visits are on the rise—in 2024, they increased by 52% as compared to the prior year.

Elk Cloner, the first computer virus to spread in public, was written as a practical joke by Richard Skrenta, a Pittsburgh high school student.

Brian Wilson wrote the Beach Boys' 'Don't Worry Baby' for the Ronettes, but the legendary girl group rejected it.

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.

An Ebola vaccine was developed during the 2018 west African Ebola outbreak, but the 2026 Ebola outbreak is with a different species of the virus, not the one that the vaccine is approved to treat.

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

In 2009, the nation was gripped by the story of a missing young boy who was believed to be floating over Colorado in a homemade balloon, until it was revealed that he was at home the whole time.

Fast-casual restaurant Chili's is experiencing a resurgence, with its parent company recently reporting a nearly 32% increase in sales, thanks to passionate Gen Z fans on TikTok.

Poison ivy's characteristic rash is caused by an allergic response to an oily compound in the plant called urushiol.