selena timelines By Mrs. Smith's Class Jul 22, 1951 laika russia Oct 4, 1957 sputnik the first satellite Jun 12, 1961 ham america Aug 20, 1962 john glenn america Apr 29, 1969 Neil Armstrong americe Jan 18, 2021 alexei leonov russia Feb 12, 2021 Katheryn sullivan americe Mar 3, 2021 Ed white americe