https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/56b4cbe5-e5f7-4e61-8c48-bbb858b505e6 GRAVITATIONAL FIELD Date=2017-03-10 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference System Note=update Definition New Value=Boston University Department of Physics Date=2017-03-10 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Pertaining to the measurement, strength, size, etc. of the Earth's gravitational field. New Value=Pertaining to the measurement, strength, size, etc. of the Earth's gravitational field. Pertaining to the measurement, strength, size, etc. of the Earth's gravitational field. 2017-03-10 10:50:41.0