2.3.1 spase://CNES/Observatory/CDPP-AMDA/Helios1 Helios1 Helios-A 2018-10-01T20:05:54Z spase://CNES/Observatory/CDPP-AMDA/Helios Heliosphere 1974-12-10T07:11:01 1985-02-18T00:00:00