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In May 2013, I responded with the present paper to ESAs call for White Papers for the definition of Large missions. This was half a year before the launch of ESAs large astrometry mission Gaia. The present proposal for a Gaia successor mission is similar to Gaia, because two Gaia-like missions at an interval of about twenty years would provide a foundation for studies of dynamics in all branches of astronomy from the solar system and stellar systems to compact galaxies, quasars and dark matter by astrometric data which cannot be surpassed in the next 50 years.
Exoplanets mass measurements will be a critical next step to assess the habitability of Earth-like planets: a key aspect of the 2020 vision in the previous decadal survey and also central to NASAs strategic priorities. Precision astrometry delivers m
Improved quantum sensing of photon wave-functions could provide high resolution observations in the optical benefiting numerous fields, including general relativity, dark matter studies, and cosmology. It has been recently proposed that stations in o
Context: Exoplanet science has made staggering progress in the last two decades, due to the relentless exploration of new detection methods and refinement of existing ones. Yet astrometry offers a unique and untapped potential of discovery of habitab
We present a multi-calibrator solution, i.e. MultiView, to achieve accurate astrometry on the level of the thermal noise at low VLBI frequencies dominated by ionospheric residuals. We demonstrate on L-band VLBA observations how MultiView provides sup
The Extrasolar Planet Search with PRIMA project (ESPRI) aims at characterising and detecting extrasolar planets by measuring the host stars reflex motion using the narrow-angle astrometry capability of the PRIMA facility at the Very Large Telescope I