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Korabl-Sputnik 5 [2] (Russian: Корабль-Спутник 5 meaning Ship-Satellite 5) or Vostok-3KA No.2, also known as Sputnik 10 in the West, [3] was a Soviet spacecraft which was launched in 1961, as part of the Vostok programme. It was the last test flight of the Vostok spacecraft design prior the first crewed flight, Vostok 1.
Topics introduced in the New Math include set theory, modular arithmetic, algebraic inequalities, bases other than 10, matrices, symbolic logic, Boolean algebra, and abstract algebra. [2] All of the New Math projects emphasized some form of discovery learning. [3] Students worked in groups to invent theories about problems posed in the textbooks.
A Polish scientific periodical, Kto, Kiedy, Dlaczego ("Who, When, Why"), published in 1958, discussed the mission of Sputnik 2. In the periodical's section dedicated to astronautics, Krzysztof Boruń described the Sputnik 2 mission as "regrettable" and criticised not bringing Laika back to Earth alive as "undoubtedly a great loss for science". [29]
In mathematics, especially abstract algebra, loop theory and quasigroup theory are active research areas with many open problems.As in other areas of mathematics, such problems are often made public at professional conferences and meetings.
Belka and Strelka on a 2010 stamp of Russia, released to celebrate the 50th anniversary of their spaceflight. Belka (Белка, literally, "squirrel", or alternatively "Whitey") and Strelka (Стрелка, "cursor") were dogs that spent a day in space aboard Korabl-Sputnik 2 (Sputnik 5) on 19 August 1960 before safely returning to Earth.
Today's NYT Connections puzzle for Wednesday, February 19, 2025The New York Times
On October 4, 1957, the USSR launched Sputnik 1 into orbit and received transmissions from it. [86] Sputnik 1 was designed to be the forerunner for multiple satellite missions. The technology constantly underwent upgrades as the weight of satellites increased. The first notable failure occurred during Sputnik 4, an unmanned test of the Vostok ...
The R-7 was 34 m (112 ft) long, 10.3 m (34 ft) in diameter and weighed 280 metric tons (280 long tons; 310 short tons); it had a single stage with four strap on boosters powered by rocket engines using liquid oxygen (LOX) and kerosene and capable of delivering its payload up to 8,000 km (5,000 mi), with an accuracy of around 5 km (3.1 mi).