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In 1975, several notable events occurred in
spaceflight Spaceflight (or space flight) is an application of astronautics to fly objects, usually spacecraft, into or through outer space, either with or without humans on board. Most spaceflight is uncrewed and conducted mainly with spacecraft such ...
, including the launches of
Venera The Venera (, 'Venus') program was a series of space probes developed by the Soviet Union between 1961 and 1984 to gather information about the planet Venus. Thirteen probes successfully entered the Venusian atmosphere, including the two ...
9 and 10 and their
Venus Venus is the second planet from the Sun. It is often called Earth's "twin" or "sister" planet for having almost the same size and mass, and the closest orbit to Earth's. While both are rocky planets, Venus has an atmosphere much thicker ...
arrivals, the launches of the
Viking Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...
Mars Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide () atmosphere. At the average surface level the atmosph ...
missions, the joint American-Soviet Apollo–Soyuz Test Project (ASTP), the failure of Soyuz 7K-T 39, and the launch of
Aryabhatta Aryabhata ( ISO: ) or Aryabhata I (476–550 CE) was the first of the major mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy. His works include the ''Āryabhaṭīya'' (which mentions that in 3600 '' ...
, India's first satellite. *The Venera 9 mission was launched 8 June 1975 and on 20 October 1975 became the first spacecraft to orbit Venus; two days later its lander returned the first images from the surface of any planet (other than Earth). * Venera 10 was launched on 14 June 1975; it entered orbit of Venus on 23 October 1975 and its lander arrived on the surface of Venus on 25 October 1975. Both Venera 9 and Venera 10 returned various scientific observations of Venus and black-and-white television pictures from the planet's surface. *''
Viking 1 ''Viking 1'' was the first of two spacecraft, along with '' Viking 2'', each consisting of an orbiter and a lander, sent to Mars as part of NASA's Viking program. The lander touched down on Mars on July 20, 1976, the first successful Mars lan ...
'' was launched on 20 August 1975 and ''
Viking 2 The ''Viking 2'' mission was part of the American Viking program to Mars, and consisted of an orbiter and a lander essentially identical to that of the '' Viking 1'' mission. ''Viking 2'' was operational on Mars for sols ( days; '). The ''V ...
'' was launched 9 September 1975. This orbiter/lander mission was to photograph the surface of
Mars Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide () atmosphere. At the average surface level the atmosph ...
in 1976. *The Apollo-Soyuz Test Project was a collaboration between the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
and the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
that saw an end to the
space race The Space Race (, ) was a 20th-century competition between the Cold War rivals, the United States and the Soviet Union, to achieve superior spaceflight capability. It had its origins in the ballistic missile-based nuclear arms race between t ...
. The mission was launched on 15 July 1975, with the Soyuz returning on 21 July and Apollo on 24 July. *On 5 April, Soyuz 7K-T 39 aborted after the second and third stages failed to separate, with the crew pulling over 21 '' g'' on a ballistic reentry. *On 19 April, the first
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
n satellite,
Aryabhatta Aryabhata ( ISO: ) or Aryabhata I (476–550 CE) was the first of the major mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy. His works include the ''Āryabhaṭīya'' (which mentions that in 3600 '' ...
, was launched on a Soviet
Kosmos-3M The Kosmos-3M ( meaning "''Cosmos''", GRAU index 11K65M) was a Russian space launch vehicle, member of the Kosmos (rocket family), Kosmos rocket family. It was a liquid-fueled two-stage launch vehicle, first launched in 1967 and with over 420 s ...
.


Launches

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April

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June

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August

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September

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October

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November

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December

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Deep space rendezvous


EVAs


References


Footnotes


{{DEFAULTSORT:1975 In Spaceflight Spaceflight by year