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Exploration

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1947

Exploration20th CenturyOceania

Kon-Tiki Raft Completes Pacific Crossing

Norwegian explorer Thor Heyerdahl hypothesized that ancient South Americans could have reached Polynesia by drifting on balsa rafts carried by ocean currents. On April 28, 1947, he and five companions departed Callao, Peru, aboard the 45-foot Kon-Tiki raft constructed from local materials. After 101 days and over 4,300 miles, the raft smashed into a reef at Raroia in the Tuamotu Islands on August 7, 1947. The crew survived and reached shore, proving the feasibility of such a voyage though not conclusively proving historical contact. Heyerdahl documented the journey in a bestselling book that popularized experimental archaeology.

Event Detail
1949

ExplorationBorn On20th CenturyNorth America

Bruce E. Melnick Born: Astronaut and Coast Guard Officer

Bruce E. Melnick is reported as having been born on December 5, 1949, in New York City, New York, and considers Clearwater, Florida, his hometown. He is a retired United States Coast Guard officer and NASA astronaut who became the first Coast Guard aviator to fly in space. Melnick earned a Bachelor of Science in engineering from the United States Coast Guard Academy in 1972 and a Master of Science in aeronautical systems from the University of West Florida in 1975. Selected in NASA Astronaut Group 12 in 1987, he flew as a mission specialist on STS-41 in 1990, deploying the Ulysses spacecraft, and on STS-49 in 1992, the first flight of Space Shuttle Endeavour, where the crew rescued and...

Event DetailUS Military Atlas
1953

Exploration20th CenturySouth Asia

Hillary and Tenzing Become First to Summit Everest

After years of failed expeditions and the tragic 1920s attempts that claimed several lives, the 1953 British Mount Everest expedition under John Hunt sought to achieve the first confirmed ascent of the world's highest peak. New Zealander Edmund Hillary and Nepalese Sherpa Tenzing Norgay were part of the climbing team that established a series of high camps along the South Col route. On May 29, after a grueling push from their final camp, the pair reached the summit at approximately 11:30 a.m., planting flags of Britain, Nepal, India, and the United Nations. They spent only about 15 minutes on the top before descending, having taken photographs and left a small cache of supplies. News of the success reached Britain on...

Event Detail
1958

Exploration20th CenturyGlobal

USS Nautilus Reaches North Pole Underwater

During the Cold War, the United States sought technological superiority in the Arctic. The USS Nautilus, the world's first nuclear-powered submarine, departed on a secret mission called Operation Sunshine. On August 3, 1958, it became the first vessel to reach the geographic North Pole while submerged under the polar ice cap. Commander William R. Anderson announced the achievement to the crew at 11:15 p.m. EDT. The submarine continued to the Greenland Sea, proving nuclear propulsion enabled extended under-ice travel. This feat demonstrated new strategic capabilities.

Event Detail
1959

Exploration20th CenturyRussia & Central Asia

Soviet Union Launches Luna 1 Probe

The Space Race between the United States and the Soviet Union intensified in the late 1950s following Sputnik's success. On January 2, 1959, the Soviet Union launched Luna 1 from the Baikonur Cosmodrome aboard a Luna 8K72 rocket. Intended as a lunar impactor, the spacecraft missed its target due to a guidance error but became the first human-made object to escape Earth's gravitational pull and enter heliocentric orbit. It passed within about 6,000 kilometers of the Moon on January 4, carrying instruments to study cosmic rays and magnetic fields. The mission's partial success boosted Soviet prestige in space exploration.

Event DetailDaily Earth View
1959

Exploration20th CenturyRussia & Central Asia

Luna 1 Becomes First Spacecraft Near Moon

The Soviet space program, racing ahead in the early Space Race, launched Luna 1 on January 2, 1959, as part of ambitious lunar exploration efforts following Sputnik successes. Intended as an impactor mission, the spacecraft carried instruments to study the Moon's environment and cosmic rays. On January 4, Luna 1 passed within approximately 5,995 kilometers of the lunar surface, becoming the first human-made object to reach the vicinity of another celestial body. A malfunction prevented the planned impact, and the probe instead entered a heliocentric orbit. The achievement demonstrated Soviet rocketry prowess and provided early data on interplanetary space.

Event DetailDaily Earth View
1959

Exploration20th CenturyRussia & Central Asia

Soviet Luna 2 Reaches the Moon

Amid the early Cold War space race, the Soviet Union sought to demonstrate technological superiority following Sputnik’s success. Luna 2 launched on September 12, 1959, from Baikonur Cosmodrome aboard a Luna 8K72 rocket and followed a direct trajectory toward the Moon. After approximately 36 hours of flight, the probe impacted the lunar surface on September 14 near the craters Archimedes, Aristillus, and Autolycus. It became the first human-made object to reach another celestial body, scattering metal pennants bearing Soviet symbols upon impact. The achievement came just two years after Sputnik and preceded American lunar efforts.

Event DetailDaily Earth View
1961

Exploration20th CenturyRussia & Central Asia

Gagarin Becomes First Human in Space

The Soviet space program had already placed the first satellite and first animal in orbit when it prepared to launch a human. On April 12, 1961, cosmonaut Yuri Gagarin lifted off from Baikonur Cosmodrome aboard Vostok 1. His single orbit of Earth lasted 108 minutes and reached a maximum altitude of 327 kilometers. After reentry and ejection from the capsule, Gagarin parachuted safely to the ground near the Volga River. The flight instantly made him an international hero and intensified the Cold War space race.

Event DetailDaily Earth View
1961

Exploration20th CenturyNorth America

Alan Shepard Becomes First American in Space Aboard Freedom 7

The United States lagged behind the Soviet Union in the early Space Race after Yuri Gagarin's orbital flight in April 1961. NASA selected Mercury astronaut Alan Shepard for the first American crewed mission, a suborbital flight aboard the Mercury-Redstone 3 rocket. On May 5, 1961, Shepard launched from Cape Canaveral, Florida, reaching an altitude of 116 miles and traveling 303 miles downrange in 15 minutes aboard the Freedom 7 capsule. He experienced weightlessness, manual control of the spacecraft, and a successful splashdown and recovery by the USS Lake Champlain. The flight restored American confidence and demonstrated the viability of the Mercury program.

Event DetailDaily Earth View
1964

ExplorationBorn On20th CenturyNorth America

Mark Kelly Born in Orange, New Jersey

Mark Edward Kelly was born on February 21, 1964, in Orange, New Jersey, minutes before his identical twin brother, future astronaut Scott Kelly. Mark Kelly graduated from the United States Merchant Marine Academy and earned a master's degree in aeronautical engineering from the Naval Postgraduate School. He became a naval aviator, flew combat missions during the Gulf War, attended test-pilot school, and reached the rank of captain. NASA selected Kelly as an astronaut in 1996. He flew four Space Shuttle missions between 2001 and 2011, serving as commander of STS-124 and the final mission of Endeavour, STS-134. After retiring from NASA and the Navy, Kelly became active in public advocacy and politics. Arizona voters elected him to the United States...

Event DetailUS Military Atlas
1965

Exploration20th CenturyGlobal

Mariner 4 Returns First Close-Up Images of Mars

NASA launched Mariner 4 on November 28, 1964, as the first successful spacecraft designed to fly by another planet. After a seven-month journey the probe reached Mars on July 14–15, 1965, passing within 9,846 kilometers of the surface. Beginning shortly after midnight UTC on July 15, its television camera captured 21 full images plus portions of a 22nd frame, recording a narrow swath across the planet’s southern hemisphere. The pictures, transmitted to Earth over subsequent weeks, revealed a heavily cratered, barren landscape that dispelled earlier speculation about Martian canals. The mission also measured the thin Martian atmosphere and confirmed the absence of a global magnetic field.

Event DetailDaily Earth View
1966

Exploration20th CenturyGlobal

Surveyor 1 Achieves First U.S. Soft Moon Landing

In the midst of the Space Race the United States sought to demonstrate the technical capability for controlled lunar landings ahead of crewed missions. Surveyor 1 launched from Cape Canaveral on May 30, 1966, and traveled directly to the Moon. On June 2 the spacecraft executed a retro-rocket burn and touchdown sequence, becoming the first American probe to soft-land on another celestial body. It settled in Oceanus Procellarum and immediately began transmitting photographs and engineering data. The mission operated for over six weeks, returning more than 11,000 images and confirming surface bearing strength suitable for future Apollo landings.

Event DetailDaily Earth View
1968

Exploration20th CenturyNorth America

Apollo 8 Launches on First Crewed Lunar Mission

Amid the Apollo program's push to reach the Moon before decade's end, NASA prepared its third crewed flight as the first to leave Earth orbit. Astronauts Frank Borman, James Lovell, and William Anders lifted off aboard the Saturn V rocket from Kennedy Space Center on December 21, 1968. The mission achieved translunar injection and entered lunar orbit on Christmas Eve, broadcasting live images of Earth. The crew completed 10 orbits before returning safely. This flight marked humanity's first journey to another celestial body.

Event DetailDaily Earth View
1968

Exploration20th CenturyNorth America

Apollo 8 Becomes First Crewed Spacecraft to Orbit Moon

In 1968, NASA accelerated its lunar program following earlier test flights amid Cold War competition. The Apollo 8 crew—Frank Borman, James Lovell, and William Anders—launched on December 21 aboard a Saturn V rocket. On December 24, the spacecraft performed the translunar injection burn and entered lunar orbit, becoming the first humans to reach and circle another celestial body. The crew conducted ten orbits, captured the iconic Earthrise photograph, and broadcast live readings from Genesis to a global audience on Christmas Eve. They safely returned to Earth on December 27.

Event DetailDaily Earth View
1969

Exploration20th CenturyNorth America

Apollo 11 Launches Toward the Moon

Following President John F. Kennedy's 1961 challenge to land humans on the Moon before the decade's end, NASA developed the Apollo program amid Cold War competition with the Soviet Union. On July 16, 1969, at 9:32 a.m. EDT, the Saturn V rocket carrying Apollo 11 lifted off from Kennedy Space Center in Florida with astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins aboard. The mission aimed to achieve the first crewed lunar landing. Four days later, the lunar module Eagle touched down in the Sea of Tranquility, and Armstrong and Aldrin became the first humans to walk on the Moon. The launch marked the culmination of years of engineering and scientific preparation.

Event DetailDaily Earth View
1969

Exploration20th CenturyGlobal

Apollo 11 Spacecraft Enters Lunar Orbit

The Space Race of the 1960s pitted the United States against the Soviet Union in a quest for lunar supremacy, with NASA accelerating programs after earlier successes and setbacks. Following launch on July 16, the Apollo 11 crew of Neil Armstrong, Buzz Aldrin, and Michael Collins traveled toward the Moon aboard Columbia and Eagle modules. On July 19, the spacecraft fired its service propulsion engine to enter initial lunar orbit after passing behind the Moon, achieving a stable path approximately 69 by 190 miles above the surface. The crew conducted systems checks and prepared for the next day's descent, transmitting observations of the planned landing site in the Sea of Tranquility. This orbit insertion positioned the mission for the historic...

Event DetailDaily Earth View
1969

Exploration20th CenturyGlobal

Apollo 11 Lands on the Moon

By the late 1960s, the United States and Soviet Union competed fiercely in the Space Race, with President John F. Kennedy's 1961 challenge setting a national goal to land humans on the Moon before decade's end. NASA developed the Saturn V rocket and Apollo spacecraft through years of testing and earlier missions. On July 20, 1969, the lunar module Eagle, carrying Neil Armstrong and Buzz Aldrin, touched down in the Sea of Tranquility while Michael Collins orbited overhead. Armstrong became the first human to walk on the lunar surface hours later, followed by Aldrin. The crew collected samples, deployed experiments, and returned safely to Earth on July 24.

Event DetailDaily Earth View
1969

Exploration20th CenturyGlobal

Neil Armstrong Becomes First Human to Walk on Moon

Following the successful Apollo 8 and 10 missions that tested lunar orbit and procedures, NASA launched Apollo 11 on July 16, 1969, carrying astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins toward the Moon as the culmination of the decade-long effort to fulfill President Kennedy's goal. After a three-day journey and successful lunar module descent, the Eagle landed in the Sea of Tranquility on July 20. At 02:56 UTC on July 21, 1969, Armstrong descended the ladder and became the first human to set foot on the lunar surface, followed shortly by Aldrin, while Collins orbited above in the command module. The astronauts conducted experiments, collected samples, and planted an American flag during their approximately two-and-a-half-hour extravehicular activity before returning...

Event DetailDaily Earth View
1969

Exploration20th CenturyGlobal

NASA Launches Apollo 12 Moon Mission

After the success of Apollo 11 earlier that year, NASA accelerated its lunar program to demonstrate precision landing capabilities and conduct scientific surveys. Apollo 12 lifted off from Kennedy Space Center on November 14, 1969, carrying astronauts Charles "Pete" Conrad, Richard Gordon, and Alan Bean aboard a Saturn V rocket. The crew faced challenges including lightning strikes shortly after launch but proceeded to the Moon. They achieved a pinpoint landing near the Surveyor 3 probe in the Ocean of Storms on November 19. The mission returned with lunar samples and demonstrated the feasibility of targeted explorations.

Event DetailDaily Earth View
1969

Exploration20th CenturyNorth America

Apollo 12 Makes Second Moon Landing

Following the success of Apollo 11 earlier that year, NASA launched Apollo 12 on November 14, 1969, with astronauts Charles Pete Conrad, Alan Bean, and Richard Gordon aboard. The mission aimed for a precision landing near the Surveyor 3 probe that had arrived on the Moon in 1967. Despite lightning strikes during launch that temporarily disrupted systems, the spacecraft reached lunar orbit without further incident. On November 19, the lunar module Intrepid touched down in the Ocean of Storms just 535 feet from Surveyor 3. Conrad and Bean conducted two EVAs, deploying scientific instruments, collecting samples, and retrieving parts from the Surveyor probe before returning safely to Earth on November 24.

Event DetailDaily Earth View
1970

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.

Event DetailDaily Earth View
1970

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.

Event DetailDaily Earth View
1971

Exploration20th CenturyGlobal

Apollo 15 Lands on the Moon with Lunar Rover

Following earlier Apollo successes, NASA pursued more ambitious scientific objectives with Apollo 15. Commanded by David Scott with James Irwin as lunar module pilot, the mission carried the first Lunar Roving Vehicle. After launch on July 26, the spacecraft entered lunar orbit, and on July 30, 1971, the Falcon lunar module touched down in the Hadley-Apennine region near Hadley Rille. The crew conducted three extended extravehicular activities, driving the rover across the surface to collect geological samples and deploy experiments. They returned to Earth on August 7 after gathering over 170 pounds of lunar material and transmitting extensive photographic and scientific data.

Event DetailDaily Earth View
1971

Exploration20th CenturyGlobal

Apollo 15 Crew First Uses Lunar Rover on Moon

NASA's Apollo program aimed to conduct extensive scientific exploration of the lunar surface following earlier landings. Apollo 15 landed in the Hadley-Apennine region with astronauts David Scott and James Irwin. On July 31, 1971, they deployed and drove the battery-powered Lunar Roving Vehicle for the first time, traveling several kilometers to collect samples and conduct experiments. The rover allowed far greater mobility than previous missions. The crew returned with a wealth of geological data.

Event DetailDaily Earth View