Sentinel-1BRocket launchby ArianespaceEuropeLaunch time25 Apr 201621:01:13 UTCsuccessEarth observation, cosmology and technology demonstration satellites.MissionRocketPayloadsRocket SoyuzSTAlaunched from Guiana Space Centre, ELSFrench GuianaPayloadsNamePurposeMassCommentAAUSAT-4---MICROSCOPE---OUFTI-1---Sentinel-1B---e-st@r 2---