Russia π·πΊ @Russia
#OTD in 1957 the world heard its first manmade signal from space - it was the first artificial satellite, Soviet #Sputnik1 transmitted radio signal from orbit for 21 days π "Beep... Beep... Beep..." π Such a simple sound marked a huge leap forward for humanity. https://t.co/r492EjfR3V — PolitiTweet.org