This paper provides a timely, state-of-the-art overview of geophysical measurements in Antarctica assembled by a broad community of Antarctic scientists, advancing our understanding of solid-Earth processes and their impact on the cryosphere. The societal relevance of Antarctic observations is profound: the ongoing mass loss of the Antarctic Ice Sheet contributes to global-mean sea-level rise at 0.4 mm/yr. To generate reliable sea-level projections for the future, reviews like this manuscript are essential. The authors make a case for science-driven, multidisciplinary geophysical observations in combination with improved modelling in order to develop precise and reliable projections for Antarctica’s future mass change and associated contribution to sea-level change at both regional and global scales.