Sputnik 1 was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957, orbiting for three weeks before its batteries died, then silently for two more months before falling back into the atmosphere. It was a 58 cm (23 in) diameter polished metal sphere, with four external radio antennas to broadcast radio pulses. Its radio signal was easily detectable even by radio amateurs. This surprise success triggered the Space Race, a part of the Cold War. The launch was the beginning of a new era of political, military, technological, and scientific developments.
Tracking and studying Sputnik 1 from Earth provided scientists with valuable information. The density of the upper atmosphere could be deduced from its drag on the orbit, and the propagation of its radio signals gave data about the ionosphere.
It was followed by Sputnik 2, the second spacecraft launched into Earth orbit, on 3 November 1957, and the first to carry a living animal, a Soviet space dog named Laika. Laika survived for several orbits but died a few hours after the launch. Sputnik 2 reentered the Earth's atmosphere on 14 April 1958, burning up in the atmosphere.
Vanguard TV3, also called Vanguard Test Vehicle Three was the first attempt of the United States to launch a satellite into orbit around the Earth, after the successful Soviet launches of Sputnik 1 and 2.
However, the fuel system appears to have malfunctioned. At its launch attempt on December 6, 1957, at Cape Canaveral Air Force Station, the booster ignited and began to rise, but about two seconds after liftoff, after rising about four feet (1.2 m), the rocket lost thrust and fell back to the launch pad. As it settled the fuel tanks ruptured and exploded, destroying the rocket and severely damaging the launch pad. The Vanguard satellite was thrown clear and landed on the ground a short distance away with its transmitters still sending out a beacon signal. The satellite was damaged, however, and could not be reused.
Explorer 1 was the first satellite launched by the United States. It was launched on January 31, 1958 from Cape Canaveral Missile Annex, Florida. It was the first spacecraft to detect the Van Allen radiation belt, returning data until its batteries were exhausted after nearly four months. It remained in orbit until 1970.
On March 17, 1958, Vanguard 1 became the second artificial satellite successfully placed in Earth orbit by the United States. It was the first solar-powered satellite. Just 152 mm (6.0 in) in diameter and weighing just 1.4 kg (3.1 lb), Vanguard 1 was described by then-Soviet Premier Nikita Khrushchev as, "The grapefruit satellite." Vanguard 1, and the upper stage of its launch rocket, are now the oldest artificial satellites still in space, as Vanguard's predecessors, Sputnik 1, Sputnik 2, and Explorer 1, have decayed from orbit.
Click Here for a full list of unmanned rockets (sortable by launch date) sent to the moon by the USSR and the US between 1959 and 1976.
USSR Vostok programme
|Vostok 1||12 April 1961||1 h 48 m||12 April 1961||Yuri Gagarin||First man in space.|
|Vostok 2||6 August 1961||1 d 1 h 18 m||7 August 1961||Gherman Titov||First crewed mission lasting a full day.|
|Vostok 3||11 August 1962||3 d 22 h 22 m||15 August 1962||Andriyan Nikolayev||First simultaneous flight of two crewed spacecraft.|
|Vostok 4||12 August 1962||2 d 22 h 56 m||15 August 1962||Pavel Popovich||First simultaneous flight of two crewed spacecraft.|
|Vostok 5||14 June 1963||4 d 23 h 7 m||19 June 1963||Valery Bykovsky||Longest solo orbital flight.|
|Vostok 6||16 June 1963||2 d 22 h 50 m||19 June 1963||Valentina Tereshkova||First woman in space.|
NASA's first human spaceflight program click here for a summarized account.
|MR-3||Freedom 7||Shepard||14:34 on May 5, 1961||LC-5||15 m 22 s||0||117 (188)||—||5,134 (8,262)||3.5 (5.6)|
|MR-4||Liberty Bell 7||Grissom||12:20 on Jul. 21, 1961||LC-5||15 m 37 s||0||118 (190)||—||5,168 (8,317)||5.8 (9.3)|
|MA-6||Friendship 7||Glenn||14:47 on Feb. 20, 1962||LC-14||4 h 55 m 23 s||3||162 (261)||100 (161)||17,544 (28,234)||46 (74)|
|MA-7||Aurora 7||Carpenter||12:45 on May 24, 1962||LC-14||4 h 56 m 5 s||3||167 (269)||100 (161)||17,549 (28,242)||248 (400)|
|MA-8||Sigma 7||Schirra||12:15 on Oct. 3, 1962||LC-14||9 h 13 m 15 s||6||176 (283)||100 (161)||17,558 (28,257)||4.6 (7.4)|
|MA-9||Faith 7||Cooper||13:04 on May 15, 1963||LC-14||1 d 10 h 19 m 49 s||22||166 (267)||100 (161)||17,547 (28,239)||5.0 (8.1)|
NASA's second human spaceflight program.
It was originally seen as a simple extrapolation of the Mercury program, and thus early on was called Mercury Mark II. However, its missions included the first American extravehicular activity (EVA) on June 3 1965, and the first docking of two spacecraft in orbit on March 16 1966. That second event was conducted by Neil Armstrong on the Gemini 8, though he undocked shortly afterwards when the Gemini went into a spin.
Click here for links to these Gemini missions.
NASA's third human spaceflight program click here for a summarized account.
|Mission name||Lunar lander||Lunar landing date||Lunar liftoff date||Lunar landing site||Duration on lunar surface (DD:HH:MM)||Crew||Number of EVAs||Total EVA Time (HH:MM)|
|Apollo 11||Eagle||20 July 1969||21 July 1969||Sea of Tranquility||0:21:31||Neil Armstrong, Edwin "Buzz" Aldrin||1||2:31|
|Apollo 12||Intrepid||19 November 1969||21 November 1969||Ocean of Storms||1:07:31||Charles "Pete" Conrad, Alan Bean||2||7:45|
|Apollo 14||Antares||5 February 1971||6 February 1971||Fra Mauro||1:09:30||Alan B. Shepard, Edgar Mitchell||2||9:21|
|Apollo 15||Falcon||30 July 1971||2 August 1971||Hadley Rille||2:18:55||David Scott, James Irwin||3||18:33|
|Apollo 16||Orion||21 April 1972||24 April 1972||Descartes Highlands||2:23:02||John Young, Charles Duke||3||20:14|
|Apollo 17||Challenger||11 December 1972||14 December 1972||Taurus–Littrow||3:02:59||Eugene Cernan, Harrison "Jack" Schmitt||3||22:04|
Regarding the Apollo 13, it consisted of a Command Service Module called Odyssey, and a Lunar Module called Aquarius. With its crew members Jim Lovell, John Swigert and Fred Haise, it launched April 11, 1970 but due to an explosion on the service module, the crew had to do a "flyby" of the Moon (with its landing aborted). The crew survived by spending the majority of the trip in the Lunar Module. Its closest approach to the moon was April 15 at a distance of 254 kilometers, then it landed successfully in the South Pacific Ocean on April 17.
NASA's fourth human spaceflight program click here for a summarized account.
The Space Shuttle has been the only winged crewed spacecraft to achieve orbit and land, and the only reusable space vehicle that has ever made multiple flights into orbit. However, also famous (or rather infamous) for two mission accidents:
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