#OTD 12 April 1961, #YuriGagarin became the 1st person in space when he was launched in his #Vostok 1 spacecraft. See more https://t.co/y270QIOM48 #yurisnight #firstorbit #cosmonauticsday pic.twitter.com/DtRkcU96Nf
— ESA space history (@ESA_History) April 12, 2018
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