Venera 7 (Russian: -7, lit.'Venus 7') was a Soviet spacecraft, part of the Venera series of probes to Venus. When it landed on the Venusian surface on 15 December 1970, it became the first spacecraft to soft land on another planet and the first to transmit data from there back to Earth.
The Venera (Russian: Вене́ра, pronounced [vʲɪˈnʲɛrə], which means "Venus" in Russian) program was the name given to a series of space probes developed by the Soviet Union between 1961 and 1984 to gather information about the planet Venus. Ten probes successfully landed on the surface of the planet, including the two Vega program and Venera-Halley probes, while thirteen probes successfully entered the Venusian atmosphere. Due to the extreme surface conditions on Venus, the probes could only survive for a short period on the surface, with times ranging from 23 minutes to two hours.
The Venera program established a number of precedents in space exploration, among them being the first human-made devices to enter the atmosphere of another planet (Venera 3 on 1 March 1966), the first to make a soft landing on another planet (Venera 7 on 15 December 1970), the first to return images from another planet's surface (Venera 9 on 8 June 1975), the first to record sounds on another planet (Venera 13 on 30 October 1981), and the first to perform high-resolution radar mapping scans (Venera 15 on 2 June 1983).
1970Aug, 17
Venera program: Venera 7 launched. It will later become the first spacecraft to successfully transmit data from the surface of another planet (Venus).
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Events on 1970
- 12Jan
Nigerian Civil War
Biafra capitulates, ending the Nigerian Civil War. - 28Apr
Richard Nixon
Vietnam War: U.S. President Richard Nixon formally authorizes American combat troops to fight communist sanctuaries in Cambodia. - 5Sep
101st Airborne Division
Vietnam War: Operation Jefferson Glenn begins: The United States 101st Airborne Division and the South Vietnamese 1st Infantry Division initiate a new operation in Thừa Thiên-Huế Province. - 28Sep
Gamal Abdel Nasser
Egyptian President Gamal Abdel Nasser dies of a heart attack in Cairo. Anwar Sadat is named as Nasser's temporary successor, and will later become the permanent successor. - 8Oct
Richard Nixon
Vietnam War: In Paris, a Communist delegation rejects US President Richard Nixon's October 7 peace proposal as "a manoeuvre to deceive world opinion".