Gagarin & the Race to Put a Human in Space

History of Space Exploration

Chapter 4 · Gagarin & the Race to Put a Human in Space

After Sputnik (Chapter 3), the next contest was to put a person in space. The Soviet Union won it on 12 April 1961 with Yuri Gagarin, and the United States followed three weeks later with Alan Shepard. The sources are three reference articles, on Gagarin, on Shepard and on the Vostok 1 mission. They give the two flights clearly. They also record a concealed detail about the landing, which the chapter treats as central.

Vostok 1

Vostok 1 launched on 12 April 1961 at 06:07 UTC from Baikonur Cosmodrome Site 1. The source gives the flight as about 108 minutes, and adds that one source suggests 106.

Feature	What the source says
Orbit	A single orbit, apogee 327 km and perigee 181 km, with a period of 89.1 minutes.
Control	The mission operated under automatic systems and ground control. Because of medical concerns about how a person would respond to weightlessness, engineers locked the manual controls, though a code (1-2-5) was placed aboard for emergencies. It was disclosed to Gagarin beforehand.
Provisions	The spacecraft carried 13 days of provisions in case the retrorockets failed. The article says natural orbital decay would have taken 20 days.
Landing	Gagarin ejected at 7 km altitude and parachuted separately, and the spacecraft also descended by parachute. Both landed 26 km southwest of Engels in the Saratov region.

A Safety Margin the Numbers Do Not Cover The source calls the gap between 13 days of supplies and 20 days of natural decay "a significant safety margin uncertainty." It does not say how the 20-day figure was reached, or whether it was known before launch. I use it only as the article's own remark.

Who Was Gagarin

Yuri Gagarin was born on 9 March 1934 in Klushino and died on 27 March 1968 near Kirzhach in a MiG-15 crash. From 154 qualified pilots, medical commissions selected 29 candidates and 20 were approved. The first twelve, including Gagarin, were approved on 7 March 1960. He was chosen as primary pilot over five others in the accelerated "Vanguard Six" training group. The source does not say why he was chosen, and I did not find the reasons.

What He Said at Launch The source says Gagarin used the informal phrase "Off we go!" at launch, which later became a popular expression in the Eastern Bloc. The Russian word "Poyekhali" that goes with it in popular accounts is not in the source I read, so I report the English phrase only.

The Concealed Landing

The Soviet Union initially insisted that Gagarin had landed with his capsule, and he had to give that account at press conferences. The Vostok 1 article says the deception persisted until 1971, when Moscow admitted he had ejected separately.

Why It Mattered, and What Is Unclear The source says the FAI required pilots to land with their spacecraft for official records, and that it "revised its rules" after learning the truth and certified Gagarin's accomplishment. The Gagarin article says the same about certification. The two articles differ on the year the truth emerged only by implication: one says officials "initially concealed" it, and the other says Moscow admitted it in 1971. I did not find when the FAI learned, or how the rules were changed, so the chapter does not date that.

Freedom 7

Alan Shepard (18 November 1923 to 21 July 1998) was one of seven astronauts chosen from military test pilots and announced on 9 April 1959, the Mercury Seven. On 5 May 1961 he piloted a suborbital mission, Freedom 7, reaching 101.2 nautical miles in a flight of 15 minutes. The spacecraft splashed down 263.1 nautical miles downrange.

	Vostok 1 (Gagarin)	Freedom 7 (Shepard)
Date	12 April 1961	5 May 1961, 23 days later
Type	Orbital, one orbit	Suborbital
Duration	About 108 minutes	15 minutes
Control	Automatic, manual controls locked	Some manual control of the craft's attitude
Spacecraft	About three times larger, per the Shepard article	The smaller of the two

Two Numbers for the Gap The Shepard article says "three weeks" and the Vostok article says "23 days." The dates give 23 days, so I use that. The two agree.

Not the Same Kind of Flight The comparison shows the two flights were not equivalent. A suborbital flight goes up and comes down, and an orbital flight circles the Earth. The Vostok article calls it the decisive first achievement in human spaceflight, and the Shepard article treats the Soviet flight as the earlier and larger one. The sources do not say how the American public or government responded to being second, so I add nothing about that. Chapter 3's account of the Sputnik reaction is the nearest evidence, and it does not transfer to 1961.

After the Flights

Gagarin: became an international celebrity and a Soviet national hero, with parades and state honours. He died in 1968, and the source says the cause remains uncertain and disputed, with investigations pointing to weather, a possible bird strike, oxygen deprivation or a near-miss collision. The Kremlin declined further investigation in 2007.
Shepard: in 1971 he became "the fifth and, at the age of 47, the oldest man to walk on the Moon," and the only one of the Mercury Seven to do so. He struck two golf balls on the lunar surface. Chapter 6 returns to the Moon landings.

A Death Left Unresolved The source gives four explanations for the 1968 crash and does not favour one. I do not choose either. It is a disputed cause and I report it as such.

What I Did Not Verify I did not find the design of the Vostok capsule beyond what is above, the Mercury-Redstone booster, Valentina Tereshkova and later flights, the maximum altitude of Vostok 1, the political decisions behind announcing the flight, or what Gagarin himself later said about the landing. I also did not check the claim about the capsule size against another source.

Hands-On Exercises

Exercise 1

Compare Vostok 1 and Freedom 7 on four points using the chapter, and say why calling both "the first" would be misleading.

→ Solution

Exercise 2

A student writes "Gagarin landed in his capsule." Use the chapter to correct it and say how the error arose.

→ Solution

Exercise 3

List the explanations the chapter gives for Gagarin's death and say what evidence would be needed to prefer one.

→ Solution

Quick Reference

Vostok 1: 12 April 1961, 06:07 UTC, Baikonur; about 108 minutes; one orbit (181 to 327 km); ejected at 7 km
Concealment: the separate landing was hidden until 1971; the FAI revised its rules
Gagarin: 1934 to 1968; selected from 154 pilots; cause of death disputed
Freedom 7: 5 May 1961; suborbital; 15 minutes; 101.2 nautical miles; some manual control
Shepard: Mercury Seven (announced 9 April 1959); walked on the Moon in 1971
Not covered: the capsule's design, later flights, the reasons for Gagarin's selection