2.4.1 spase://CNES/Observatory/CDPP-AMDA/Helios2 Helios2 Helios-B 2018-10-01T20:05:54Z spase://SMWG/Person/James.H.Trainor ProjectScientist spase://SMWG/Person/Herbert.Porsche ProjectScientist spase://CNES/Observatory/CDPP-AMDA/Helios Heliosphere 1976-01-15T05:34:00 1979-12-23T00:00:00