2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/DisplayData/POLAR/VIS/UIOWA NASA DisplayData Polar VIS Images from U. Iowa 2025-12-04T13:28:01Z 2020-07-07T19:48:35Z Only known prior ReleaseDate of the metadata 2025-11-14T16:17:33Z Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB 2025-12-04T13:28:01Z Added MetadataRightsList. Updated to 2.7.1. ZCB Polar VIS Images to near current from U. Iowa Frank, Louis A. 2025-11-14T16:17:33Z University of Iowa spase://SMWG/Person/Louis.A.Frank PrincipalInvestigator spase://VSPO/DisplayData/P_POLAR_HDR_VIS_UIOWA spase://VSPO/DisplayData/POLAR/VIS/UIOWA spase://SMWG/Repository/UIowa/ParticlesImagingGroup Online Open U. Iowa site http://vis.physics.uiowa.edu/vis/images/ GIF CALIBRATED spase://SMWG/Instrument/POLAR/VIS ImageIntensity 1996-06-17T00:00:00 2008-04-16T00:00:00 Optical PT54S Earth.Magnetosphere Earth.NearSurface.Ionosphere