El espacio By Paula Benitez Oct 4, 1957 Spulnik I Nov 3, 1957 Spulnik II Jan 31, 1958 Explorer I Mar 26, 1958 Explorer III May 15, 1958 Spulnik III Feb 17, 1959 Vanguard II Apr 19, 1971 Salyut 1 Apr 4, 1983 Challenger EEUU Feb 19, 1986 Mir URSS May 8, 1992 Endeavour Apr 17, 2007 Liberand I
