2.2.0 spase://SMWG/Observatory/ISEE ISEE Mission 2010-10-01T20:05:54Z The Explorer-class spacecraft, International Sun-Earth Explorer, that were part of the mother/daughter/heliocentric mission (ISEE 1, ISEE 2, ISEE 3). The purposes of the mission were: * (1) to investigate solar-terrestrial relationships at the outermost boundaries of the Earth's magnetosphere, * (2) to examine in detail the structure of the solar wind near the Earth and the shock wave that forms the interface between the solar wind and the Earth's magnetosphere, * (3) to investigate motions of and mechanisms operating in the plasma sheets, and * (4) to continue the investigation of cosmic rays and solar flare effects in the interplanetary region near 1 AU. The three spacecraft carried a number of complementary instruments for making measurements of plasmas, energetic particles, waves, and fields. The mission thus extended the investigations of previous IMP spacecraft. spase://SMWG/Person/Keith.W.Ogilvie ProjectScientist Heliosphere.NearEarth