ɐlʲɪkˈsʲejɪvʲɪdʑ‿ɡɐˈɡarʲɪn]; Gagarin's first name is sometimes transliterated as Yuriy, Youri, or Yury. In this name that follows Eastern Slavic naming customs, the patronymic...

Jury, Jurij, Iurii, Iouri, Yury, Yuri, Youri, Yurii, Yuriy or Yurij is the Slavic (Belarusian: Юры, romanized: Jury, or Bulgarian: Юрий, romanized: Jurij...

that neither Gagarin nor Titov slept that night. Chief Designer Sergei Korolev did not sleep that night, due to anxiety caused by the imminent spaceflight...