Sputnik 2Sputnik 2 (ˈsputjnjɪk, Спутник-2, Satellite 2), or Prosteyshiy Sputnik 2 (PS-2, Простейший Спутник 2, Simplest Satellite 2) was the second spacecraft launched into Earth orbit, on 3 November 1957, and the first to carry an animal into orbit, a Soviet space dog named Laika. Laika died on the fourth orbit due to overheating caused by an air conditioning malfunction. Launched by the Soviet Union, Sputnik 2 was a cone-shaped capsule with a base diameter of that weighed around , though it was not designed to separate from the rocket core that brought it to orbit, bringing the total mass in orbit to .
RocketA rocket (from ) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely from propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space. Rockets work more efficiently in a vacuum and incur a loss of thrust due to the opposing pressure of the atmosphere. Multistage rockets are capable of attaining escape velocity from Earth and therefore can achieve unlimited maximum altitude.
Animals in spaceAnimals in space originally served to test the survivability of spaceflight, before human spaceflights were attempted. Later, other non-human animals were flown to investigate various biological processes and the effects microgravity and space flight might have on them. Bioastronautics is an area of bioengineering research that spans the study and support of life in space. To date, seven national space programs have flown animals into space: the United States, Soviet Union, France, Argentina, China, Japan and Iran.
SpaceflightSpaceflight (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 as satellites in orbit around Earth, but also includes space probes for flights beyond Earth orbit. Such spaceflight operate either by telerobotic or autonomous control.
NASAThe National Aeronautics and Space Administration (NASA ˈnæsə) is an independent agency of the U.S. federal government responsible for the civil space program, aeronautics research, and space research. Established in 1958, NASA succeeded the National Advisory Committee for Aeronautics (NACA) to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science.
Baikonur CosmodromeThe Baikonur Cosmodrome (Байқоңыр ғарыш айлағы Baiqoñyr ğaryş ailağy bɑjxɔˈnər ɣɑˈrəʃ ɑjlɑˈɣə; Космодром Байконур Kosmodrom Baykonur kɐsməˈdrom bɐjkəˈnʊr) is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the world's first spaceport to be used for orbital and human launches. In terms of area, it is the largest operational space launch facility. All Russian crewed spaceflights are launched from Baikonur.
RussiansThe Russians (russkiye) are an East Slavic ethnic group indigenous to Eastern Europe, who share a common Russian ancestry, culture, and history. Russian, the most spoken Slavic language, is the shared mother tongue of the Russians; Orthodox Christianity has been their majority religion since the formation of a Russian identity in the Middle Ages. They are the largest Slavic nation and the largest European nation. The Russians were formed from East Slavic tribes, and their cultural ancestry is based in Kievan Rus'.
