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- Sputnik_1 abstract "Sputnik 1 (/ˈspʌtnɪk/; Russian: Спутник-1 [ˈsputnʲɪk] \"Satellite-1\", or ПС-1 [\"PS-1\", i.e., Russian: Простейший Спутник-1 \"Elementary Satellite 1\"]) was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on October 4, 1957. It was a 58 cm (23 in) diameter polished metal sphere, with four external radio antennae to broadcast radio pulses. It was visible all around the Earth and its radio pulses were detectable. This surprise success precipitated the American Sputnik crisis and triggered the Space Race, a part of the larger Cold War. The launch ushered in new political, military, technological, and scientific developments.Sputnik itself provided scientists with valuable information, even though it was not equipped with scientific instruments. The density of the upper atmosphere could be deduced from its drag on the orbit, and the propagation of its radio signals gave information about the ionosphere.Sputnik 1 was launched during the International Geophysical Year from Site No.1/5, at the 5th Tyuratam range, in Kazakh SSR (now at the Baikonur Cosmodrome). The satellite travelled at about 29,000 kilometres per hour (18,000 mph; 8,100 m/s), taking 96.2 minutes to complete each orbit. It transmitted on 20.005 and 40.002 MHz, which were monitored by amateur radio operators throughout the world. The signals continued for 21 days until the transmitter batteries ran out on 26 October 1957. Sputnik 1 burned up on 4 January 1958, as it fell from orbit upon reentering Earth's atmosphere, after travelling about 70 million km (43.5 million miles) and spending three months in orbit.".
- Sputnik_1 thumbnail Sputnik_1.jpg?width=300.
- Sputnik_1 wikiPageExternalLink sputnik.
- Sputnik_1 wikiPageExternalLink index.html.
- Sputnik_1 wikiPageExternalLink 2007-09-30-3949485139_x.htm.
- Sputnik_1 wikiPageExternalLink sputnik.html.
- Sputnik_1 wikiPageExternalLink 82269150.html.
- Sputnik_1 wikiPageExternalLink S_Sputnik1.htm.
- Sputnik_1 wikiPageExternalLink solarsystem.nasa.gov.
- Sputnik_1 wikiPageExternalLink profile.cfm?MCode=Sputnik.
- Sputnik_1 wikiPageExternalLink sputnik.infospace.ru.
- Sputnik_1 wikiPageExternalLink ussr.html.
- Sputnik_1 wikiPageExternalLink 5584.
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- Sputnik_1 wikiPageWikiLink -nik.
- Sputnik_1 wikiPageWikiLink ...The_Heavens_and_the_Earth:_A_Political_History_of_the_Space_Age.
- Sputnik_1 wikiPageWikiLink Aerodynamic_drag.
- Sputnik_1 wikiPageWikiLink Air_Force_Cambridge_Research_Laboratories.
- Sputnik_1 wikiPageWikiLink Alan_Shepard.
- Sputnik_1 wikiPageWikiLink Alloy.
- Sputnik_1 wikiPageWikiLink Amateur_radio.
- Sputnik_1 wikiPageWikiLink American_Radio_Relay_League.
- Sputnik_1 wikiPageWikiLink Service_Module.
- Sputnik_1 wikiPageWikiLink Apparent_magnitude.
- Sputnik_1 wikiPageWikiLink Armstrong_Air_and_Space_Museum.
- Sputnik_1 wikiPageWikiLink Army_Ballistic_Missile_Agency.
- Sputnik_1 wikiPageWikiLink Association_for_Supervision_and_Curriculum_Development.
- Sputnik_1 wikiPageWikiLink Atmosphere_(unit).
- Sputnik_1 wikiPageWikiLink Atmosphere_of_Earth.
- Sputnik_1 wikiPageWikiLink Atyrau_Region.
- Sputnik_1 wikiPageWikiLink Baikonur_Cosmodrome.
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- Sputnik_1 wikiPageWikiLink Beat_Generation.
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- Sputnik_1 wikiPageWikiLink Bendix_Aviation.
- Sputnik_1 wikiPageWikiLink Bolted_joint.
- Sputnik_1 wikiPageWikiLink California_Science_Center.
- Sputnik_1 wikiPageWikiLink Category:1957_in_international_relations.
- Sputnik_1 wikiPageWikiLink Category:1957_in_the_Soviet_Union.
- Sputnik_1 wikiPageWikiLink Category:Amateur_radio_history.
- Sputnik_1 wikiPageWikiLink Category:Cold_War_terminology.
- Sputnik_1 wikiPageWikiLink Category:Earth_satellites_of_the_Soviet_Union.
- Sputnik_1 wikiPageWikiLink Category:First_artificial_satellite_of_a_country.
- Sputnik_1 wikiPageWikiLink Category:History_of_electronic_engineering.
- Sputnik_1 wikiPageWikiLink Category:Nikita_Khrushchev.
- Sputnik_1 wikiPageWikiLink Category:Russian_inventions.
- Sputnik_1 wikiPageWikiLink Category:Soviet_inventions.
- Sputnik_1 wikiPageWikiLink Category:Spacecraft_launched_in_1957.
- Sputnik_1 wikiPageWikiLink Category:Spacecraft_which_reentered_in_1958.
- Sputnik_1 wikiPageWikiLink Category:Sputnik.
- Sputnik_1 wikiPageWikiLink Central_Committee_of_the_Communist_Party_of_the_Soviet_Union.
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- Sputnik_1 wikiPageWikiLink Columbia_University.
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- Sputnik_1 wikiPageWikiLink Cosmosphere.
- Sputnik_1 wikiPageWikiLink Council_of_Ministers_of_the_Soviet_Union.
- Sputnik_1 wikiPageWikiLink Courier_1B.
- Sputnik_1 wikiPageWikiLink DARPA.
- Sputnik_1 wikiPageWikiLink Deke_Slayton.
- Sputnik_1 wikiPageWikiLink Deorbit_of_Mir.
- Sputnik_1 wikiPageWikiLink Dmitriy_Ustinov.
- Sputnik_1 wikiPageWikiLink Donald_B._Gillies.
- Sputnik_1 wikiPageWikiLink Dwight_D._Eisenhower.
- Sputnik_1 wikiPageWikiLink Explorer_1.
- Sputnik_1 wikiPageWikiLink File:Sputnik_asm.jpg.
- Sputnik_1 wikiPageWikiLink Flight_control_surfaces.
- Sputnik_1 wikiPageWikiLink Fort_Worth_Museum_of_Science_and_History.
- Sputnik_1 wikiPageWikiLink Frontiers_of_Flight_Museum.
- Sputnik_1 wikiPageWikiLink Gagarins_Start.
- Sputnik_1 wikiPageWikiLink Geocentric_orbit.
- Sputnik_1 wikiPageWikiLink Georgy_Grechko.
- Sputnik_1 wikiPageWikiLink Ground_track.
- Sputnik_1 wikiPageWikiLink Gyroscope.
- Sputnik_1 wikiPageWikiLink Heat_shield.
- Sputnik_1 wikiPageWikiLink Herb_Caen.
- Sputnik_1 wikiPageWikiLink Hermetic_seal.
- Sputnik_1 wikiPageWikiLink Hertz.
- Sputnik_1 wikiPageWikiLink Homer_Hickam.
- Sputnik_1 wikiPageWikiLink ILLIAC_I.
- Sputnik_1 wikiPageWikiLink Intercontinental_ballistic_missile.
- Sputnik_1 wikiPageWikiLink International_Geophysical_Year.
- Sputnik_1 wikiPageWikiLink Ion.
- Sputnik_1 wikiPageWikiLink Ionosphere.
- Sputnik_1 wikiPageWikiLink Jay_S._Walker.
- Sputnik_1 wikiPageWikiLink Jet_Propulsion_Laboratory.
- Sputnik_1 wikiPageWikiLink Jodrell_Bank_Observatory.
- Sputnik_1 wikiPageWikiLink John_Logsdon.
- Sputnik_1 wikiPageWikiLink Karaganda_Region.
- Sputnik_1 wikiPageWikiLink Kazakh_Soviet_Socialist_Republic.
- Sputnik_1 wikiPageWikiLink Kerim_Kerimov.
- Sputnik_1 wikiPageWikiLink Klyuchi,_Kamchatka_Krai.