Space Race

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This article is about the Cold War rivalry between the United States and the Soviet Union. For various space races, see List of space races. For other uses of the term, see Space Race (disambiguation).
For a chronological guide, see Timeline of the Space Race.

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The Space Race was a 20th-century competition between two

space probes to the Moon, Venus, and Mars, and human spaceflight in low Earth orbit and ultimately to the Moon.[1]

Public interest in space travel originated in the 1951 publication of a Soviet youth magazine and was promptly picked up by US magazines.[2] The competition began on July 30, 1955, when the United States announced its intent to launch artificial satellites for the International Geophysical Year. Four days later, the Soviet Union responded by declaring they would also launch a satellite "in the near future". The launching of satellites was enabled by developments in ballistic missile capabilities since the end of World War II.[3] The competition gained Western public attention with the "Sputnik crisis", when the USSR achieved the first successful satellite launch, Sputnik 1, on October 4, 1957. It gained momentum when the USSR sent the first human, Yuri Gagarin, into space with the orbital flight of Vostok 1 on April 12, 1961. These were followed by a string of other early firsts achieved by the Soviets over the next few years.[4]

Gagarin's flight led US president

Salyut, the first space station program, and the first landings on Venus and on Mars. Meanwhile, the US landed five more Apollo crews on the Moon[12] and continued exploration of other extraterrestrial bodies
robotically.

A period of

International Space Station programs.[14][15]

Origins

Although Germans, Americans and Soviets experimented with small liquid-fuel rockets before

Vergeltungswaffe 2 (V-2) developed by Nazi Germany to bomb the Allies in the war.[16]
After the war, both the US and USSR acquired custody of German rocket development assets which they used to leverage the development of their own missiles.

Wernher von Braun's space station concept (1952)

Public interest in space flight was first aroused in October 1951 when the Soviet rocketry engineer Mikhail Tikhonravov published "Flight to the Moon" in the newspaper Pionerskaya pravda for young readers. He described a two-person interplanetary spaceship of the future and the industrial and technological processes required to create it. He ended the short article with a clear forecast of the future: "We do not have long to wait. We can assume that the bold dream of Konstantin Tsiolkovsky will be realized within the next 10 to 15 years."[17] From March 1952 to April 1954, the US Collier's magazine reacted with a series of seven articles Man Will Conquer Space Soon! detailing Wernher von Braun's plans for crewed spaceflight. In March 1955, Disneyland's animated episode Man in Space in the US television with an audience of about 40 million people eventually fired the public enthusiasm for space travel and raised government interest, both in the US and USSR.

Missile race

Main article: Intercontinental ballistic missile

Soon after the end of World War II, the two former allies became engaged in a state of political conflict and military tension known as the Cold War (1947–1991), which polarized Europe between the Soviet Union's satellite states (often referred to as the Eastern Bloc) and the states of the Western world allied with the U.S.[18]

Soviet rocket development

Further information: Soviet rocketry and Soviet space program
The Soviet stable of Sputnik, Vostok, Voskhod, and Soyuz launch vehicles were all derivatives of the R-7 Semyorka ICBM.

The first Soviet development of artillery rockets was in 1921 when the Soviet military sanctioned the Gas Dynamics Laboratory, a small research laboratory to explore solid fuel rockets, led by Nikolai Tikhomirov, who had begun studying solid and liquid-fueled rockets in 1894, and obtained a patent in 1915 for "self-propelled aerial and water-surface mines.[19][20] The first test-firing of a solid fuel rocket was carried out in 1928.[21]

Further development was carried out in the 1930s by the

Sergey Korolev, Friedrich Zander, Mikhail Tikhonravov and Leonid Dushkin[22] launched GIRD-X, the first Soviet liquid-fueled rocket in 1933.[23] In 1933 the two design bureaus were combined into the Reactive Scientific Research Institute[24] and produced the RP-318, the USSR's first rocket-powered aircraft and the RS-82 and RS-132 missiles,[25] which became the basis for the Katyusha multiple rocket launcher,[26][27] During the 1930s Soviet rocket technology was comparable to Germany's,[28] but Joseph Stalin's Great Purge
from 1936 to 1938 severely damaged its progress.

In 1945 the Soviets captured several key

space dogs.[37]
: 21–23 

Design work began in 1953 on the R-7 Semyorka with the requirement for a missile with a launch mass of 170 to 200 tons, range of 8,500 km and carrying a 3,000 kg (6,600 lb) nuclear warhead, powerful enough to launch a nuclear warhead against the United States. In late 1953 the warhead’s mass was increased to 5.5 to 6 tons to accommodate the then planned theromonuclear bomb.[38][39] On the 21 August 1957 the R-7 flew 6,000 km (3,700 mi), and became the worlds’s first intercontinental ballistic missile.[40][39] Two months later the R-7 launched Sputnik 1, the first artificial satellite, into orbit, and became the basis for the R-7 family which includes Sputnik, Luna, Molniya, Vostok, and Voskhod space launchers, as well as later Soyuz variants. Several versions are still in use and it has become the world’s most reliable space launcher.[41][42]

American rocket development

Wernher von Braun became the United States' lead rocket engineer during the 1950s and 1960s.

Although American rocket pioneer

first photos of Earth from space, and the first two-stage rocket, the WAC Corporal-V-2 combination, in 1949.[45] The German rocket team was moved from Fort Bliss to the Army's new Redstone Arsenal, located in Huntsville, Alabama, in 1950.[46] From here, von Braun and his team developed the Army's first operational medium-range ballistic missile, the Redstone rocket, derivatives of which launched both America's first satellite, and the first piloted Mercury space missions.[46] It became the basis for both the Jupiter and Saturn family of rockets.[46]

The US stable of Explorer 1, Mercury, Gemini, and Apollo launch vehicles were a varied group of ICBMs and the NASA-developed Saturn IB rocket.

Each of the United States armed services had its own ICBM development program. The Air Force began ICBM research in 1945 with the

Agena Target Vehicle used in Project Gemini.[47]

First artificial satellites

In 1955, with both the United States and the Soviet Union building ballistic missiles that could be used to launch objects into space, the stage was set for nationalistic competition.

Leonid I. Sedov told international reporters at the Soviet embassy of his country's intention to launch a satellite as well, in the "near future".[3]

Soviet planning

Further information: Soviet space program

On August 30, 1955, Korolev managed to get the

Telegraph Agency of the Soviet Union (TASS) established precedents for all official announcements on the Soviet space program. The information eventually released did not offer details on who built and launched the satellite or why it was launched. However, the public release is illuminating in what it does reveal: "there is an abundance of arcane scientific and technical data... as if to overwhelm the reader with mathematics in the absence of even a picture of the object".[49]

The Soviet space program's use of secrecy served as both a tool to prevent the leaking of

Cosmonaut names were not released until they flew. Mission details were sparse. Outside observers did not know the size or shape of their rockets or cabins or most of their spaceships, except for the first Sputniks, lunar probes, and Venus probe.[50]

The Soviet military maintained control over the space program; Korolev's

OKB-1 design bureau was subordinated under the Ministry of General Machine Building,[49] tasked with the development of intercontinental ballistic missiles, and continued to give its assets random identifiers into the 1960s.[49] They cloaked the program in a shroud of secrecy; public pronouncements were uniformly positive. As far as the public knew, the Soviet space program had never experienced failure. According to historian James Andrews, "With almost no exceptions, coverage of Soviet space exploits, especially in the case of human space missions, omitted reports of failure or trouble".[49]

Dominic Phelan says in the book Cold War Space Sleuths (Springer-Praxis 2013): "The

USSR was famously described by Winston Churchill as 'a riddle, wrapped in a mystery, inside an enigma' and nothing signified this more than the search for the truth behind its space program during the Cold War. Although the Space Race was literally played out above our heads, it was often obscured by a figurative 'space curtain' that took much effort to see through".[50]

United States planning

Further information: Space policy of the United States

Initially, President Eisenhower was worried that a satellite passing above a nation at over 100 kilometers (62 mi) might be seen as violating that nation's airspace.

Vanguard rocket, which was a research-only rocket.[53] This meant that von Braun's team was not allowed to put a satellite into orbit with their Jupiter-C rocket, because of its intended use as a future military vehicle.[53] On September 20, 1956, von Braun and his team did launch a Jupiter-C that was capable of putting a satellite into orbit, but the launch was used only as a suborbital test of reentry vehicle technology.[53]

Sputnik

Korolev received word about von Braun's 1956 Jupiter-C test and, mistakenly thinking it was a satellite mission that failed, expedited plans to get his own satellite in orbit. Since the R-7 was substantially more powerful than any of the US

short wave radio frequencies, the ability to detect if a meteoroid were to penetrate its pressure hull, and the ability to detect the density of the Earth's thermosphere.[58]

Replica of the first artificial satellite Sputnik 1, 1957
Beep ... beep ... beep
The signals of Sputnik 1 continued for 22 days
Problems playing this file? See media help.

Korolev was buoyed by the first successful launches of the R-7 rocket in August and September, which paved the way for the launch of Sputnik.

National Academy of Sciences in Washington D.C., with a paper titled "Satellite Over the Planet", on October 6, 1957.[60] Korolev anticipated that von Braun might launch a Jupiter-C with a satellite payload on or around October 4 or 5, in conjunction with the paper.[60] He hastened the launch, moving it to October 4.[60] The launch vehicle for PS-1 was a modified R-7 – vehicle 8K71PS number M1-PS – without much of the test equipment and radio gear that was present in the previous launches.[59] It arrived at the Soviet missile base Tyura-Tam in September and was prepared for its mission at launch site number one.[59] The first launch took place on Friday, October 4, 1957, at exactly 10:28:34 pm Moscow time, with the R-7 and the now named Sputnik 1 satellite lifting off the launch pad and placing the artificial "moon" into an orbit a few minutes later.[61] This "fellow traveler", as the name is translated in English, was a small, beeping ball, less than two feet in diameter and weighing less than 200 pounds. But the celebrations were muted at the launch control center until the down-range far east tracking station at Kamchatka received the first distinctive beep ... beep ... beep sounds from Sputnik 1's radio transmitters, indicating that it was on its way to completing its first orbit.[61] About 95 minutes after launch, the satellite flew over its launch site, and its radio signals were picked up by the engineers and military personnel at Tyura-Tam: that's when Korolev and his team celebrated the first successful artificial satellite placed into Earth-orbit.[62]

US response

Main article: Sputnik crisis

CIA assessment

At the latest, the successful start of Sputnik 2 with its weight of more than 500 kg proved that the USSR had achieved a leading advantage in rocket technology. The dumbfounded CIA estimated the launch weight at 500 metric tons requiring an initial thrust of more than 1,000 tons and supposed the use of a three-stage rocket. In a secret report, it concluded that ″the launching of two earth satellites must have been a stupendous scientific achievement. ... Launching of these satellites does indicate, however, that the USSR has perfected an ICBM which they can put on any desired target with accuracy."[63] In reality, the launch weight of the Soviet rocket was 267 metric tons with an initial thrust of 410 tons with one and a half stages. The CIA's misjudgement was caused by extrapolating the parameters of the US Atlas rocket developed at the same time (launch weight 82 tons, initial thrust 135 tones, maximum payload of 70 kg for low Earth orbit).[64] In part, the favourable data of the Soviet launcher was based on concepts proposed by the German rocket scientists headed by Helmut Gröttrup on Gorodomlya Island, such as, among other things, the rigorous weight saving, the control of the residual fuel quantities and a reduced thrust to weight relation of 1.4 instead of usual factor 2.[65] The CIA had heard about such details already in January 1954 when it interrogated Göttrup after his return from the USSR but did not take him seriously.[66]

US reactions

William Hayward Pickering, James Van Allen
, and Wernher von Braun display a full-scale model of Explorer 1 at a Washington, DC news conference after confirmation the satellite was in orbit.

The Soviet success raised a great deal of concern in the United States. For example, economist Bernard Baruch wrote in an open letter titled "The Lessons of Defeat" to the New York Herald Tribune: "While we devote our industrial and technological power to producing new model automobiles and more gadgets, the Soviet Union is conquering space. ... It is Russia, not the United States, who has had the imagination to hitch its wagon to the stars and the skill to reach for the moon and all but grasp it. America is worried. It should be."[67]

Eisenhower ordered project Vanguard to move up its timetable and launch its satellite much sooner than originally planned.

Cape Canaveral Air Force Station in Florida. It was a monumental failure, exploding a few seconds after launch, and it became an international joke. The satellite appeared in newspapers under the names Flopnik, Stayputnik, Kaputnik,[69] and Dudnik.[70] In the United Nations, the Soviet delegate offered the US representative aid "under the Soviet program of technical assistance to backwards nations."[69] Only in the wake of this very public failure did von Braun's Redstone team get the go-ahead to launch their Jupiter-C rocket as soon as they could. In Britain, the US's Western Cold War ally, the reaction was mixed: some celebrated the fact that the Soviets had reached space first, while others feared the destructive potential that military uses of spacecraft might bring.[71] The Daily Express predicted that the US would catch up to and pass the USSR in space; "never doubt for a moment that America would be successful".[72]

On January 31, 1958, nearly four months after the launch of Sputnik 1, von Braun and the United States successfully launched its first satellite on a four-stage

Geiger-Müller tube. It passed in and out of the Earth-encompassing radiation belt with its 194-by-1,368-nautical-mile (360 by 2,534 km) orbit, therefore saturating the tube's capacity and proving what Dr. James Van Allen, a space scientist at the University of Iowa, had theorized.[73] The belt, named the Van Allen radiation belt, is a doughnut-shaped zone of high-level radiation intensity around the Earth above the magnetic equator.[74] Van Allen was also the man who designed and built the satellite instrumentation of Explorer 1. The satellite measured three phenomena: cosmic ray and radiation levels, the temperature in the spacecraft, and the frequency of collisions with micrometeorites. The satellite had no memory for data storage, therefore it had to transmit continuously.[75]
In March 1958 a second satellite was sent into orbit with augmented cosmic ray instruments.

Creation of NASA

Main article: Creation of NASA

On April 2, 1958, President Eisenhower reacted to the Soviet space lead in launching the first satellite by recommending to the US Congress that a civilian agency be established to direct nonmilitary space activities. Congress, led by

National Advisory Committee on Aeronautics into the National Aeronautics and Space Administration (NASA). It also created a Civilian-Military Liaison Committee, appointed by the President, responsible for coordinating the nation's civilian and military space programs.[76]

On October 21, 1959, Eisenhower approved the transfer of the Army's remaining space-related activities to NASA. On July 1, 1960, the Redstone Arsenal became NASA's George C. Marshall Space Flight Center, with von Braun as its first director. Development of the Saturn rocket family, which when mature gave the US parity with the Soviets in terms of lifting capability, was thus transferred to NASA.[77]

Robotic lunar probes

In 1958, Korolev upgraded the R-7 to be able to launch a 400-kilogram (880 lb) payload to the Moon. The Luna program began with three failed secret 1958 attempts to launch Luna E-1-class impactor probes.[78] The fourth attempt, Luna 1, launched successfully on January 2, 1959, but missed the Moon. The fifth attempt on June 18 also failed at launch. The 390-kilogram (860 lb) Luna 2 successfully impacted the Moon on September 14, 1959. The 278.5-kilogram (614 lb) Luna 3 successfully flew by the Moon and sent back pictures of its far side on October 7, 1959.[79]

The US first embarked on the Pioneer program in 1958 by launching the first probe, albeit ending in failure. A subsequent probe named Pioneer 1 was launched with the intention of orbiting the Moon only to result in a partial mission success when it reached an apogee of 113,800 km before falling back to Earth. The missions of Pioneer 2 and Pioneer 3 failed whereas Pioneer 4 had one partially successful lunar flyby in March 1959.[80][81]

The

solar panels and navigational system failed near the Moon and it impacted the far side without returning any scientific data. Ranger 5 ran out of power and missed the Moon by 725 kilometers (391 nmi) on October 21, 1962. The first successful Ranger mission was the 806-pound (366 kg) Block III Ranger 7 which impacted on July 31, 1964.[82] Ranger had three successful impactors out of nine attempts.[83]

The Surveyor program had five successful soft landings out of seven attempts from 1966 to 1968. The Lunar Orbiter program had five successes out of five attempts in 1966–1967.

First mammals in space

The US and the USSR sent animals into space to determine the safety of the environment before sending the first humans. The USSR used

dogs for this purpose, and the US used monkeys and apes. The first mammal in space was Albert II, a rhesus monkey launched by the US on a sub-orbital flight on June 14, 1949, who died on landing due to a parachute malfunction.[84]

Laika on a Romanian post stamp

The USSR sent the dog Laika into orbit on Sputnik 2 on November 3, 1957, for an intended ten-day flight. They did not yet have the technology to return Laika safely to Earth, and the government reported Laika died when the oxygen ran out,[85] but in October 2002 her true cause of death was reported as stress and overheating on the fourth orbit[86] due to failure of the air conditioning system.[87] At a Moscow press conference in 1998 Oleg Gazenko, a senior Soviet scientist involved in the project, stated "The more time passes, the more I'm sorry about it. We did not learn enough from the mission to justify the death of the dog...".[88]

On August 19, 1960, the dogs Belka and Strelka were sent into orbit aboard Sputnik 5 and safely returned.

The Americans sent the chimpanzee Ham on a suborbital flight of the Mercury capsule on Mercury-Redstone 2 and recovered him safely on January 31, 1961.[89][90]

The chimpanzee Enos was launched on Mercury-Atlas 5 on November 29, 1961, into what was supposed to be a three-orbit flight.[91] However, the mission was aborted after two orbits due to capsule overheating, and a malfunctioning "avoidance conditioning" test subjecting him to 76 electrical shocks.[92]

First humans in space

Vostok

Main article: Vostok programme
Replica of the Zenit and Vostok spacecraft bus

The Soviets designed their first human

biconic instrument module with a mass of 2.27 tonnes (5,000 lb), 2.25 meters (7.4 ft) long and 2.43 meters (8.0 ft) in diameter, containing the engine system and propellant. After reentry, the cosmonaut would eject at about 7,000 meters (23,000 ft) over the USSR and descend via parachute, while the capsule would land separately, because the descent module made an extremely rough landing that could have left a cosmonaut seriously injured.[94] The "Vostok spaceship" was first displayed at the July 1961 Tushino air show, mounted on its launch vehicle's third stage, with the nose cone in place concealing the spherical capsule. A tail section with eight fins was added in an apparent attempt to confuse western observers. This also appeared on official commemorative stamps and a documentary.[95]
The Soviets finally revealed the true appearance of their Vostok capsule at the April 1965 Moscow Economic Exhibition.

Yuri Gagarin, the first person in space, 1961

On April 12, 1961, the USSR surprised the world by launching

cosmonaut, roughly translated from Russian and Greek as "sailor of the universe". Gagarin's capsule was flown in automatic mode, since doctors did not know what would happen to a human in the weightlessness of space; but Gagarin was given an envelope containing the code that would unlock manual control in an emergency.[94]

Gagarin became a national hero of the Soviet Union and the Eastern Bloc, and a worldwide celebrity. Moscow and other cities in the USSR held mass demonstrations, the scale of which was second only to the

World War II Victory Parade of 1945.[96] April 12 was declared Cosmonautics Day in the USSR, and is celebrated today in Russia as one of the official "Commemorative Dates of Russia."[97] In 2011, it was declared the International Day of Human Space Flight by the United Nations.[98]

The USSR demonstrated 24-hour launch pad turnaround and launched two piloted spacecraft,

Vostok 3 cosmonaut Andriyan Nikolayev,[105] and they had a daughter.[106]

Mercury

Main article: Project Mercury
Cutaway of the Mercury capsule

The US Air Force had been developing a program to launch the first man in space, named Man in Space Soonest. This program studied several different types of one-man space vehicles, settling on a ballistic re-entry capsule launched on a derivative Atlas missile, and selecting a group of nine candidate pilots. After NASA's creation, the program was transferred over to the civilian agency's Space Task Group and renamed Project Mercury on November 26, 1958. The Mercury spacecraft was designed by the STG's chief engineer Maxime Faget. NASA selected a new group of astronaut (from the Greek for "star sailor") candidates from Navy, Air Force and Marine test pilots, and narrowed this down to a group of seven for the program. Capsule design and astronaut training began immediately, working toward preliminary suborbital flights on the Redstone missile, followed by orbital flights on the Atlas. Each flight series would first start unpiloted, then carry a non-human primate, then finally humans.

The Mercury spacecraft's principal designer was

retro-rockets strapped over a beryllium or fiberglass heat shield on the blunt end. Base diameter at the blunt end was 6.0 feet (1.8 m) and length was 10.8 feet (3.3 m); with the launch escape system added, the overall length was 25.9 feet (7.9 m).[108] With 100 cubic feet (2.8 m3) of habitable volume, the capsule was just large enough for a single astronaut.[109] The first suborbital spacecraft weighed 3,000 pounds (1,400 kg); the heaviest, Mercury-Atlas 9, weighed 3,000 pounds (1,400 kg) fully loaded.[110]
On reentry, the astronaut would stay in the craft through splashdown by parachute in the Atlantic Ocean.

Alan Shepard, the first American in space, 1961

On May 5, 1961,

retro-rocket firing.[112] After his successful return, Shepard was celebrated as a national hero, honored with parades in Washington, New York and Los Angeles, and received the NASA Distinguished Service Medal from President John F. Kennedy.[113]

John Glenn, the first American in orbit, 1962

American

Cape Canaveral Air Force Station.[116] As the first American in orbit, Glenn became a national hero, and received a ticker-tape parade in New York City, reminiscent of that given for Charles Lindbergh
.

The United States launched three more Mercury flights after Glenn's:

Faith 7 on May 15, 1963, 22 orbits (32.4 hours), the maximum capability of the spacecraft. NASA at first intended to launch one more mission, extending the spacecraft's endurance to three days, but since this would not beat the Soviet record, it was decided instead to concentrate on developing Project Gemini.[117]

Kennedy aims for the Moon

Main article: Apollo program
See also: Moon landing

These are extraordinary times. And we face an extraordinary challenge. Our strength, as well as our convictions, have imposed upon this nation the role of leader in freedom's cause.

... if we are to win the battle that is now going on around the world between freedom and tyranny, the dramatic achievements in space which occurred in recent weeks should have made clear to us all, as did the Sputnik in 1957, the impact of this adventure on the minds of men everywhere, who are attempting to make a determination of which road they should take. ... Now it is time to take longer strides – time for a great new American enterprise – time for this nation to take a clearly leading role in space achievement, which in many ways may hold the key to our future on Earth.

... Recognizing the head start obtained by the Soviets with their large rocket engines, which gives them many months of lead-time, and recognizing the likelihood that they will exploit this lead for some time to come in still more impressive successes, we nevertheless are required to make new efforts on our own.

... I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the Moon and returning him safely to the Earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space, and none will be so difficult or expensive to accomplish.

... Let it be clear that I am asking the Congress and the country to accept a firm commitment to a new course of action—a course which will last for many years and carry very heavy costs: 531 million dollars in fiscal '62—an estimated seven to nine billion dollars additional over the next five years. If we are to go only half way, or reduce our sights in the face of difficulty, in my judgment it would be better not to go at all.

John F. Kennedy,
Special Message to Congress on Urgent National Needs, May 25, 1961[5]

Before Gagarin's flight, US President John F. Kennedy's support for America's piloted space program was lukewarm. Jerome Wiesner of MIT, who served as a science advisor to presidents Eisenhower and Kennedy, and himself an opponent of sending humans into space, remarked, "If Kennedy could have opted out of a big space program without hurting the country in his judgment, he would have."[118] As late as March 1961, when NASA administrator James E. Webb submitted a budget request to fund a Moon landing before 1970, Kennedy rejected it because it was simply too expensive.[119] Some were surprised by Kennedy's eventual support of NASA and the space program because of how often he had attacked the Eisenhower administration's inefficiency during the election.[120]

Gagarin's flight changed this; now Kennedy sensed the humiliation and fear on the part of the American public over the Soviet lead. Additionally, the

Bay of Pigs invasion, planned before his term began but executed during it, was an embarrassment to his administration due to the colossal failure of the US forces.[121] Looking for something to save political face, he sent a memo dated April 20, 1961, to Vice President Lyndon B. Johnson, asking him to look into the state of America's space program, and into programs that could offer NASA the opportunity to catch up.[122] The two major options at the time were either the establishment of an Earth orbital space station or a crewed landing on the Moon. Johnson, in turn, consulted with von Braun, who answered Kennedy's questions based on his estimates of US and Soviet rocket lifting capability.[123] Based on this, Johnson responded to Kennedy, concluding that much more was needed to reach a position of leadership, and recommending that the crewed Moon landing was far enough in the future that the US had a fighting chance to achieve it first.[124]

Kennedy ultimately decided to pursue what became the Apollo program, and on May 25 took the opportunity to ask for Congressional support in a Cold War speech titled "Special Message on Urgent National Needs". Full text Wikisource has information on "Special Message to the Congress on Urgent National Needs" He justified the program in terms of its importance to national security, and its focus of the nation's energies on other scientific and social fields.

Lyndon B. Johnson Space Center facility.[125] Full text Wikisource has information on "We choose to go to the moon"

Khrushchev responded to Kennedy's challenge with silence, refusing to publicly confirm or deny the Soviets were pursuing a "Moon race". As later disclosed, the Soviet Union secretly pursued

Proton rocket
. After Korolev's death in January 1966, another government decree of February 1967 moved the first crewed flyby to mid-1967, and the first crewed landing to the end of 1968.

Proposed joint US-USSR program

After a first US-USSR

Dryden-Blagonravov agreement and cooperation on the Echo II balloon satellite in 1962,[13] President Kennedy proposed on September 20, 1963, in a speech before the United Nations General Assembly, that the United States and the Soviet Union join forces in an effort to reach the Moon.[127] Kennedy thus changed his mind regarding the desirability of the space race, preferring instead to ease tensions with the Soviet Union by cooperating on projects such as a joint lunar landing.[128] Soviet Premier Nikita Khrushchev initially rejected Kennedy's proposal.[129] However, on October 2, 1997, it was reported that Khrushchev's son Sergei claimed Khrushchev was poised to accept Kennedy's proposal at the time of Kennedy's assassination on November 22, 1963. During the next few weeks he reportedly concluded that both nations might realize cost benefits and technological gains from a joint venture, and decided to accept Kennedy's offer based on a measure of rapport during their years as leaders of the world's two superpowers, but changed his mind and dropped the idea since he did not have the same trust for Kennedy's successor, Lyndon Johnson.[129]

Some cooperation in robotic space exploration nevertheless did take place,

ISS
.

As President, Johnson steadfastly pursued the Gemini and Apollo programs, promoting them as Kennedy's legacy to the American public. One week after Kennedy's death, he issued Executive Order 11129 renaming the Cape Canaveral and Apollo launch facilities after Kennedy.

First crewed spacecraft

Focused by the commitment to a Moon landing, in January 1962 the US announced Project Gemini, a two-person spacecraft that would support the later three-person Apollo by developing the key spaceflight technologies of

extra-vehicular activity to perform work outside the spacecraft.[133][134]

Meanwhile, Korolev had planned further long-term missions for the Vostok spacecraft, and had four Vostoks in various stages of fabrication in late 1963 at his

OKB-1 facilities.[135] The Americans' announced plans for Gemini represented major advances over the Mercury and Vostok capsules, and Korolev felt the need to try to beat the Americans to many of these innovations.[135] He had already begun designing the Vostok's replacement, the next-generation Soyuz, a multi-cosmonaut spacecraft that had at least the same capabilities as the Gemini spacecraft.[136] Soyuz would not be available for at least three years, and it could not be called upon to deal with this new American challenge in 1964 or 1965.[137] Political pressure in early 1964 – which some sources claim was from Khrushchev while other sources claim was from other Communist Party officials – pushed him to modify his four remaining Vostoks to beat the Americans to new space firsts in the size of flight crews, and the duration of missions.[135]

Voskhod

Main article: Voskhod programme
Korolev modified the one-person Vostok capsule into carrying three people, or two plus an airlock for spacewalk capability.

Korolev's conversion of his surplus Vostok capsules to the

Apollo Command Module flew in 1968; the command module cabin was designed to transport three astronauts in a low pressure, pure oxygen shirt-sleeve environment
while in space.

On March 18, 1965, about a week before the first piloted Project Gemini space flight, the USSR launched the two-cosmonaut Voskhod 2 mission with Pavel Belyayev and Alexei Leonov.[140] Voskhod 2's design modifications included the addition of an inflatable airlock to allow for extravehicular activity (EVA), also known as a spacewalk, while keeping the cabin pressurized so that the capsule's electronics would not overheat.[141] Leonov performed the first-ever EVA as part of the mission.[140] A fatality was narrowly avoided when Leonov's spacesuit expanded in the vacuum of space, preventing him from re-entering the airlock.[142] In order to overcome this, he had to partially depressurize his spacesuit to a potentially dangerous level.[142] He succeeded in safely re-entering the spacecraft, but he and Belyayev faced further challenges when the spacecraft's atmospheric controls flooded the cabin with 45% pure oxygen, which had to be lowered to acceptable levels before re-entry.[143] The reentry involved two more challenges: an improperly timed retrorocket firing caused the Voskhod 2 to land 386 kilometers (240 mi) off its designated target area, the city of Perm; and the instrument compartment's failure to detach from the descent apparatus caused the spacecraft to become unstable during reentry.[143]

By October 16, 1964, Leonid Brezhnev and a small cadre of high-ranking Communist Party officials deposed Khrushchev as Soviet government leader a day after Voskhod 1 landed, in what was called the "Wednesday conspiracy".[144] The new political leaders, along with Korolev, ended the technologically troublesome Voskhod program, canceling Voskhod 3 and 4, which were in the planning stages, and started concentrating on reaching the Moon.[145] Voskhod 2 ended up being Korolev's final achievement before his death on January 14, 1966, as it became the last of the space firsts that the USSR achieved during the early 1960s. According to historian Asif Siddiqi, Korolev's accomplishments marked "the absolute zenith of the Soviet space program, one never, ever attained since."[4] There was a two-year pause in Soviet piloted space flights while Voskhod's replacement, the Soyuz spacecraft, was designed and developed. [146]

Gemini

Main article: Project Gemini
Rendezvous of Gemini 6 and 7, December 1965

Though delayed a year to reach its first flight, Gemini was able to take advantage of the USSR's two-year hiatus after Voskhod, which enabled the US to catch up and surpass the previous Soviet superiority in piloted spaceflight. Gemini had ten crewed missions between March 1965 and November 1966: Gemini 3, Gemini 4, Gemini 5, Gemini 6A, Gemini 7, Gemini 8, Gemini 9A, Gemini 10, Gemini 11, and Gemini 12; and accomplished the following:

  • Every mission demonstrated the ability to change the craft's orbit.
  • Gemini 5 demonstrated eight-day endurance, long enough for a round trip to the Moon. Gemini 7 demonstrated a fourteen-day endurance flight.
  • Gemini 6A demonstrated rendezvous and
    Agena Target Vehicle
    (ATV).
  • Rendezvous and docking with the ATV was achieved on Gemini 8, 10, 11, and 12. Gemini 11 achieved the first direct-ascent rendezvous with its Agena target on the first orbit.
  • Edwin "Buzz" Aldrin
    spent over five hours working comfortably during three (EVA) sessions, finally proving that humans could perform productive tasks outside their spacecraft.
  • Gemini 10, 11, and 12 used the ATV's engine to make large changes in its orbit while docked. Gemini 11 used the Agena's rocket to achieve a crewed Earth orbit record
    apogee
    of 742 nautical miles (1,374 km).

Gemini 8 experienced the first in-space mission abort on March 17, 1966, just after achieving the world's first docking, when a stuck or shorted thruster sent the craft into an uncontrolled spin. Command pilot Neil Armstrong was able to shut off the stuck thruster and stop the spin by using the re-entry control system.[148] He and his crewmate David Scott landed and were recovered safely.[149]

Most of the novice pilots on the early missions would command the later missions. In this way, Project Gemini built up spaceflight experience for the pool of astronauts for the Apollo lunar missions. With the completion of Gemini, the US had demonstrated all the technologies necessary to make Kennedy's goal of landing a man on the Moon, with the exception of developing a large enough launch vehicle.

Progress in the Space Race, showing the US passing the Soviets in 1965

Soviet crewed Moon programs

Main article: Soviet crewed lunar programs
American Saturn V and Soviet N1-L3 launch vehicles
Apollo Command and Service Module
and Soyuz 7K-L3 (Lunniy Orbitalny Korabl) lunar orbiters
Soviet LK (Lunniy Korabl) and American Apollo Lunar Module lunar landers

Korolev's design bureau produced two prospectuses for circumlunar spaceflight (March 1962 and May 1963), the main spacecraft for which were early versions of his Soyuz design. Soviet Communist Party Central Committee Command 655-268 officially established two secret, competing crewed programs for circumlunar flights and lunar landings, on August 3, 1964. The circumlunar flights were planned to occur in 1967, and the landings to start in 1968.[150]

The circumlunar program (Zond), created by

Proton UR-500
rocket. The Zond sacrificed habitable cabin volume for equipment, by omitting the Soyuz orbital module. Chelomey gained favor with Khrushchev by employing members of his family.

Korolev's lunar landing program was designated N1/L3, for its N1 super rocket and a more advanced Soyuz 7K-L3 spacecraft, also known as the lunar orbital module ("Lunniy Orbitalny Korabl", LOK), with a crew of two. A separate lunar lander ("Lunniy Korabl", LK), would carry a single cosmonaut to the lunar surface.[150]

The N1/L3 launch vehicle had three stages to Earth orbit, a fourth stage for Earth departure, and a fifth stage for lunar landing assist. The combined space vehicle was roughly the same height and takeoff mass as the three-stage US

orbiter and two-person lander
. The USSR did not use liquid hydrogen until after the N-1 was canceled, therefore it was only capable of a 23.5-tonne (52,000 lb) translunar payload.

Following Khrushchev's ouster from power, Chelomey's Zond program was merged into the N1/L3 program.[153]

Outer space treaty

The US and USSR began discussions on the peaceful uses of space as early as 1958, presenting issues for debate to the United Nations,[154][155][156] which created a Committee on the Peaceful Uses of Outer Space in 1959.[157]

On May 10, 1962, Vice President Johnson addressed the Second National Conference on the Peaceful Uses of Space revealing that the United States and the USSR both supported a resolution passed by the Political Committee of the UN General Assembly in December 1962, which not only urged member nations to "extend the rules of international law to outer space," but to also cooperate in its exploration. Following the passing of this resolution, Kennedy commenced his communications proposing a cooperative American and Soviet space program.[158]

The UN ultimately created a Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, which was signed by the United States, the USSR, and the United Kingdom on January 27, 1967, and came into force the following October 10.[159]

Wikisource has original text related to this article:

This treaty:

  • bars party States from placing
    weapons of mass destruction
    in Earth orbit, on the Moon, or any other celestial body;
  • exclusively limits the use of the Moon and other celestial bodies to peaceful purposes, and expressly prohibits their use for testing weapons of any kind, conducting military maneuvers, or establishing military bases, installations, and fortifications;
  • declares that the exploration of outer space shall be done to benefit all countries and shall be free for exploration and use by all the States;
  • explicitly forbids any government from claiming a celestial resource such as the Moon or a planet, claiming that they are the
    common heritage of mankind
    , "not subject to national appropriation by claim of sovereignty, by means of use or occupation, or by any other means". However, the State that launches a space object retains jurisdiction and control over that object;
  • holds any State liable for damages caused by their space object;
  • declares that "the activities of non-governmental entities in outer space, including the Moon and other celestial bodies, shall require authorization and continuing supervision by the appropriate State Party to the Treaty", and "States Parties shall bear international responsibility for national space activities whether carried out by governmental or non-governmental entities"; and
  • "A State Party to the Treaty which has reason to believe that an activity or experiment planned by another State Party in outer space, including the Moon and other celestial bodies, would cause potentially harmful interference with activities in the peaceful exploration and use of outer space, including the Moon and other celestial bodies, may request consultation concerning the activity or experiment."

The treaty remains in force, signed by 107 member states. – As of July 2017

Disaster strikes both sides

In 1967, both nations' space programs faced serious challenges that brought them to temporary halts.

Apollo 1

Main article: Apollo 1
Charred interior of the Apollo 1 spacecraft after the fire that killed the crew

On January 27, 1967, the same day the US and USSR signed the Outer Space Treaty, the crew of the first crewed Apollo mission, Command Pilot

Roger Chaffee, were killed in a fire that swept through their spacecraft cabin during a ground test, less than a month before the planned February 21 launch. An investigative board determined the fire was probably caused by an electrical spark and quickly grew out of control, fed by the spacecraft's atmosphere of pure oxygen at greater than one standard atmosphere. Crew escape was made impossible by inability to open the plug door hatch cover against the internal pressure.[160] The board also found design and construction flaws in the spacecraft, and procedural failings, including failure to appreciate the hazard of the pure-oxygen atmosphere, as well as inadequate safety procedures.[160] All these flaws had to be corrected over the next twenty-two months until the first piloted flight could be made.[160]
Mercury and Gemini veteran Grissom had been a favored choice of Deke Slayton, NASA's Director of Flight Crew Operations, to make the first piloted landing.[161]

Soyuz 1

Main article: Soyuz 1
Commemorative plaque and the Fallen Astronaut sculpture left on the Moon in 1971 by the crew of Apollo 15 in memory of 14 deceased NASA astronauts and USSR cosmonauts

On April 24, 1967, the single pilot of Soyuz 1,

attitude control system began malfunctioning and eventually failed completely, resulting in the craft spinning wildly. Komarov was able to stop the spin with the manual system, which was only partially effective. The flight controllers aborted his mission after only one day. During the emergency re-entry, a fault in the landing parachute system caused the primary chute to fail, and the reserve chute became tangled with the drogue chute, causing descent speed to reach as high as 40 m/s (140 km/h; 89 mph). Shortly thereafter, Soyuz 1
impacted the ground 3 km (1.9 mi) west of Karabutak, exploding into a ball of flames. The official autopsy states Komarov died of blunt force trauma on impact, and that the subsequent heat mutilation of his corpse was a result of the explosive impact. Fixing the spacecraft's faults caused an eighteen-month delay before piloted Soyuz flights could resume.

Both programs recover

The United States recovered from the Apollo 1 fire, fixing the fatal flaws in an improved version of the

Block II command module. The US proceeded with unpiloted test launches of the Saturn V launch vehicle (Apollo 4 and Apollo 6) and the Lunar Module (Apollo 5) during the latter half of 1967 and early 1968.[162] The first Saturn V flight was an unqualified success, and although the second suffered some non-catastrophic engine failures, it was considered a partial success and the launcher achieved human rating qualification. Apollo 1's mission to check out the Apollo Command and Service Module in Earth orbit was accomplished by Grissom's backup crew on Apollo 7, launched on October 11, 1968.[163] The eleven-day mission was a total success, as the spacecraft performed a virtually flawless mission, paving the way for the United States to continue with its lunar mission schedule.[164]

The Soviet Union also fixed the parachute and control problems with Soyuz, and the next piloted mission Soyuz 3 was launched on October 26, 1968.[165] The goal was to complete Komarov's rendezvous and docking mission with the un-piloted Soyuz 2.[165] Ground controllers brought the two craft to within 200 meters (660 ft) of each other, then cosmonaut Georgy Beregovoy took control.[165] He got within 40 meters (130 ft) of his target, but was unable to dock before expending 90 percent of his maneuvering fuel, due to a piloting error that put his spacecraft into the wrong orientation and forced Soyuz 2 to automatically turn away from his approaching craft.[165] The first docking of Soviet spacecraft was finally realized in January 1969 by the Soyuz 4 and Soyuz 5 missions. It was the first-ever docking of two crewed spacecraft, and the first transfer of crew from one space vehicle to another.[166]

Soyuz 7K-L1 Zond spacecraft, artist view

The Soviet

Zond 1968B in July 1968.[167] Zond 4 was launched on March 2, 1968, and successfully made a circumlunar flight,[168] but encountered problems with its Earth reentry on March 9, and was ordered destroyed by an explosive charge 15,000 meters (49,000 ft) over the Gulf of Guinea.[169] The Soviet official announcement said that Zond 4 was an automated test flight which ended with its intentional destruction, due to its recovery trajectory positioning it over the Atlantic Ocean instead of over the USSR.[168]

Earthrise, as seen from Apollo 8, December 24, 1968 (photograph by astronaut William Anders)

During the summer of 1968, the Apollo program hit another snag: the first pilot-rated Lunar Module (LM) was not ready for orbital tests in time for a December 1968 launch. NASA planners overcame this challenge by changing the mission flight order, delaying the first LM flight until March 1969, and sending

tortoises on board and returned safely to Earth, accomplishing the first successful water landing of the Soviet space program in the Indian Ocean.[172] It also scared NASA planners, as it took them several days to figure out that it was only an automated flight, not piloted, because voice recordings were transmitted from the craft en route to the Moon.[173] On November 10, 1968, another automated test flight, Zond 6, was launched. It encountered difficulties in Earth reentry, and depressurized and deployed its parachute too early, causing it to crash-land only 16 kilometers (9.9 mi) from where it had been launched six days earlier.[174] It turned out there was no chance of a piloted Soviet circumlunar flight during 1968, due to the unreliability of the Zonds.[175]

On December 21, 1968, Frank Borman, James Lovell, and William Anders became the first humans to ride the Saturn V rocket into space, on Apollo 8. They also became the first to leave low-Earth orbit and go to another celestial body, entering lunar orbit on December 24.[176] They made ten orbits in twenty hours, and transmitted one of the most watched TV broadcasts in history, with their Christmas Eve program from lunar orbit, which concluded with a reading from the biblical Book of Genesis.[176] Two and a half hours after the broadcast, they fired their engine to perform the first trans-Earth injection to leave lunar orbit and return to the Earth.[176] Apollo 8 safely landed in the Pacific Ocean on December 27, in NASA's first dawn splashdown and recovery.[176]

The American Lunar Module was finally ready for a successful piloted test flight in low Earth orbit on Apollo 9 in March 1969. The next mission, Apollo 10, conducted a "dress rehearsal" for the first landing in May 1969, flying the LM in lunar orbit as close as 47,400 feet (14.4 km) above the surface, the point where the powered descent to the surface would begin.[177] With the LM proven to work well, the next step was to attempt the landing.

Unknown to the Americans, the Soviet Moon program was in deep trouble.[175] After two successive launch failures of the N1 rocket in 1969, Soviet plans for a piloted landing suffered delay.[178] The launch pad explosion of the N-1 on July 3, 1969, was a significant setback.[179] The rocket hit the pad after an engine shutdown, destroying itself and the launch facility.[179] Without the N-1 rocket, the USSR could not send a large enough payload to the Moon to land a human and return him safely.[180]

First humans on the Moon

Main article: Apollo 11
Neil Armstrong, the first person to walk on the Moon, 1969

Apollo 11 was prepared with the goal of a July landing in the

Sea of Tranquility.[181] The crew, selected in January 1969, consisted of commander (CDR) Neil Armstrong, Command Module Pilot (CMP) Michael Collins, and Lunar Module Pilot (LMP) Edwin "Buzz" Aldrin.[182] They trained for the mission until just before the launch day.[183] On July 16, 1969, at 9:32 am EDT, the Saturn V rocket, AS-506, lifted off from Kennedy Space Center Launch Complex 39 in Florida.[184]

The trip to the Moon took just over three days.

UTC, July 20, 1969 (3:17:04 pm CDT). Six hours later, at 02:56 UTC, July 21 (9:56 pm CDT July 20), Armstrong left the Eagle to become the first human to set foot on the Moon.[186]

Neil Armstrong's historic first words on the Moon.
"That's one small step for [a] man, one giant leap for mankind."
Problems playing this file? See media help.

The first step was witnessed on live television by at least one-fifth of the population of Earth, or about 723 million people.[187] His first words when he stepped off the LM's landing footpad were, "That's one small step for [a] man, one giant leap for mankind."[186] Aldrin joined him on the surface almost 20 minutes later.[188] Altogether, they spent just under two and one-quarter hours outside their craft.[189] The next day, they performed the first launch from another celestial body, and rendezvoused back with Collins in Columbia.[190]

Apollo 11 left lunar orbit and returned to Earth, landing safely in the Pacific Ocean on July 24, 1969.[191] When the spacecraft splashed down, 2,982 days had passed since Kennedy's commitment to landing a man on the Moon and returning him safely to the Earth before the end of the decade; the mission was completed with 161 days to spare.[192] With the safe completion of the Apollo 11 mission, the Americans won the race to the Moon.[193]

Armstrong and his crew became worldwide celebrities, feted with

state dinner attended by members of Congress, 44 governors, the Chief Justice of the United States, and ambassadors from 83 nations. The President and Vice president presented each astronaut with the Presidential Medal of Freedom.[194][196] The astronauts spoke before a joint session of Congress on September 16, 1969.[197] This began a 38-day world tour to 22 foreign countries and included visits with the leaders of many countries.[198]

The public's reaction in the Soviet Union was mixed. The Soviet government limited the release of information about the lunar landing, which affected the reaction. A portion of the populace did not give it any attention, and another portion was angered by it.[199]

The first landing was followed by another, precision landing on Apollo 12 in November 1969, within walking distance of the Surveyor 3 spacecraft which landed on April 20, 1967.

Competition ramps down

Eugene Cernan rides the Lunar Roving Vehicle during Apollo 17
, December 1972.

NASA had ambitious follow-on human spaceflight plans as it reached its lunar goal but soon discovered it had expended most of its political capital to do so.[200] A victim of its own success, Apollo had achieved its first landing goal with enough spacecraft and Saturn V launchers left for a total of ten lunar landings through Apollo 20, conducting extended-duration missions and transporting the landing crews in Lunar Roving Vehicles on the last five. NASA also planned an Apollo Applications Program (AAP) to develop a longer-duration Earth orbital workshop (later named Skylab) from a spent S-IVB upper stage, to be constructed in orbit using several launches of the smaller Saturn IB launch vehicle.

In February 1969, President

Nixon had a better sense of the declining political support in Congress for new Apollo-style programs, which had disappeared with the achievement of the landing, and he intended to pursue détente with the USSR and China, which he hoped might ease Cold War tensions. He cut the spending proposal he sent to Congress to include funding for only the Space Shuttle, with perhaps an option to pursue the Earth orbital space station for the foreseeable future.[203]

AAP planners decided the Earth orbital workshop could be accomplished more efficiently by prefabricating it on the ground and launching it with a single Saturn V, which immediately eliminated Apollo 20. Budget cuts soon led NASA to cut Apollo 18 and 19 as well. Apollo 13 had to abort its lunar landing in April 1970 due to an in-flight spacecraft failure but returned its crew safely to Earth. The Apollo program made its final lunar landing in December 1972; the two unused Saturn Vs were used as outdoor visitor displays and allowed to deteriorate due to the effects of weathering.

The USSR continued trying to develop its N1 rocket, after two more launch failures in 1971 and 1972, finally canceling it in May 1974, without achieving a single successful uncrewed test flight.[204]

Salyuts and Skylab

The Soyuz 11 crew with the Salyut station in the background, in a Soviet commemorative stamp

Having lost the race to the Moon, the USSR decided to concentrate on orbital space stations. During 1969 and 1970, they launched six more Soyuz flights after Soyuz 3 and then launched a series of six successful space stations (plus two failures to achieve orbit and one station rendered uninhabitable due to damage from explosion of the launcher's upper stage) on their Proton-K heavy-lift launcher in their Salyut program designed by Kerim Kerimov. Each one weighed between 18,500 and 19,824 kilograms (40,786 and 43,704 lb), was 20 meters (66 ft) long by 4 meters (13 ft) in diameter, and had a habitable volume of 99 cubic meters (3,500 cu ft). All of the Salyuts were presented to the public as non-military scientific laboratories, but three of them were covers for military Almaz reconnaissance stations: Salyut 2 (failed),[205] Salyut 3,[206] and Salyut 5.[citation needed]

asphyxiated when their spacecraft's cabin lost all pressure, shortly after undocking. The disaster was blamed on a faulty cabin pressure valve, that allowed all the air to vent into space. The crew was not wearing pressure suits and had no chance of survival once the leak occurred.[207]

The United States launched a single orbital workstation, Skylab, on May 14, 1973. It weighed 169,950 pounds (77,090 kg), was 58 feet (18 m) long by 21.7 feet (6.6 m) in diameter, and had a habitable volume of 10,000 cubic feet (280 m3). Skylab was damaged during the ascent to orbit, losing one of its solar panels and a meteoroid thermal shield. Subsequent crewed missions repaired the station, and the third and final mission's crew, Skylab 4, set a human endurance record (at the time) with 84 days in orbit when the mission ended on February 8, 1974. Skylab stayed in orbit another five years before reentering the Earth's atmosphere over the Indian Ocean and Western Australia on July 11, 1979.[208]

Salyut 4 broke Skylab's occupation record at 92 days. Salyut 6 and Salyut 7 were second-generation stations designed for long duration, and were occupied for 683 and 816 days.

Apollo–Soyuz Test Project

Main article:
Apollo-Soyuz Test Project
Valeri Kubasov
American Stafford and Russian Leonov shake hands in space aboard the Apollo–Soyuz docking adapter.

In May 1972, President

Apollo-Soyuz Test Project (ASTP). To prepare, the US designed a docking module for the Apollo that was compatible with the Soviet docking system, which allowed any of their craft to dock with any other (e.g. Soyuz-to-Soyuz as well as Soyuz-to-Salyut). The module was also necessary as an airlock to allow the men to visit each other's craft, which had incompatible cabin atmospheres. The USSR used the Soyuz 16 mission in December 1974 to test modifications of the Soyuz atmosphere and the docking adapter to prepare for ASTP.[209][210]

The joint mission began when

UTC. The three astronauts conducted joint experiments with the two cosmonauts, and the crew shook hands, exchanged gifts, and visited each other's craft.[211]

Space Shuttles

Soyuz, US Space Shuttle, and Energia-Buran

NASA achieved the first approach and landing test of its

retired
it due to the safety concern. Originally, more than 150 flights over a 15-year operation were expected; actually, the Shuttle made 135 flights in its 30-year lifespan.

The Soviets mistook the Shuttle as a military surveillance vehicle and decided they had to develop their own shuttle, which they named

collapse of the Soviet Union
in 1991, due to lack of funding. The Energia was also canceled at the same time, after only two flights.

First professional women in space

The first woman in space was from the Soviet Union, Valentina Tereshkova. NASA did not welcome female astronauts into its corps until 1978, when six female mission specialists were recruited. This first class included scientist Sally Ride, who became America's first woman in space on STS-7 in June 1983. NASA included women mission specialists in the next four astronaut candidate classes, and admitted female pilots starting in 1990. Eileen Collins from this class became the first pilot to fly on Space Shuttle flight STS-63 in February 1995, and the first female commander of a spaceflight on STS-93 in July 1999.

The USSR admitted its first female test pilot as a cosmonaut, Svetlana Savitskaya, in 1980. She became the first female to fly since Tereshkova, on Salyut 7 in December 1981.

First modular space station

The USSR turned its space program to the development of the low Earth orbit modular space station

Russian Federal Space Agency
until 2001, supported by Soyuz spacecraft.

Legacy

International Space Station in 2010

According to American political scientist

Asif A. Siddiqi proposes more nuanced view:[11]

Before that landing [Apollo 11], there was an enormous amount of investment in the robotic exploration of the Moon, both by the Soviets and the US, in terms of all sorts of smaller benchmarks like the first lunar impact, the first pictures of the far side of the Moon, the first soft lunar landing, and the first lunar orbit. We forget, but in those little races, the Soviet Union dominated almost every benchmark, but it is forgotten as the United States won the big one.

After the end of the Cold War in 1991, the assets of the USSR's space program passed mainly to Russia. Since then, the United States and Russia have cooperated in space with the

Commercial Crew Development vehicle.

Space Shuttle (US) docked to Mir (USSR/Russia) (1995), both products of the ending competition, joined in the Shuttle-Mir program (1993–1998) which facilitated the ongoing International Space Station programme
.

See also

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References

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