Anand Sri Krishnan

Open main menu Search Vostok 1 Read in another language Watch this page Edit Vostok 1  (Russian: Восто́к,  East  or  Orient  1) was the first spaceflight of the  Vostok programme  and the first  manned spaceflight in history. The  Vostok 3KA   space capsule  was launched from  Baikonur Cosmodrome  on April 12, 1961, with Soviet  cosmonaut   Yuri Gagarin  aboard, making him the first human to cross into  outer space . Vostok 1 Yuri Gagarin aboard Vostok 1, as televised to launch control Operator Soviet space program Harvard designation1961 Mu 1 COSPAR ID 1961-012A SATCAT no. 103Mission duration1 hour, 48 minutes [1] Orbits completed1Spacecraft propertiesSpacecraft Vostok-3KA  No.3ManufacturerExperimental Design Bureau  OKB-1 Launch mass4,725 kg (10,417 lb) [1] Landing mass2,400 kg (5,290 lb)Dimensions2.30 m (7 ft 6.5 in) diameterCrewCrew size1Members Yuri Gagarin CallsignКедр ( Kedr  –  Siberian pine ) [2] Start of missionLaunch dateApril 12, 1961, 06:07  UTC [3] Rocket Vostok-K

Open main menu Search Sputnik 1 Read in another language Watch this page Edit "Sputnik" redirects here. For other uses, see  Sputnik (disambiguation) . Sputnik 1  ( /ˈspʊtnɪk/  or  /ˈspʌtnɪk/ ; "Satellite-1", or "PS-1", Простейший Спутник-1 or  Prosteyshiy Sputnik-1 , "Elementary Satellite 1") [4]  was the first  artificial Earth satellite . [5] The  Soviet Union  launched it into an elliptical  low Earth orbit  on 4 October 1957, orbiting for three weeks before its batteries died, then silently for two more months before falling back into the atmosphere. It was a 58 cm (23 in) diameter polished metal sphere, with four external radio antennas to broadcast radio pulses. Its radio signal was easily detectable even by  radio amateurs , [6]  and the 65° inclination and duration of its orbit made its flight path cover virtually the entire inhabited Earth. This surprise success precipitated the American  Sputnik crisis  and triggered the  Space R