Delta 2914 article 623/D135 successfully launched the paired ISEE 1 and ISEE 2 magnetospheric spacecraft, later designated Explorers 56 and 57, into highly elliptical Earth orbits on 22 October 1977.
Delta 2914 article 623/D135 successfully launched the paired ISEE 1 and ISEE 2 magnetospheric spacecraft, later designated Explorers 56 and 57, into highly elliptical Earth orbits on 22 October 1977.