Charting the Galaxy – from HIPPARCOS to Gaia – ESA
Gaia is an astrometry mission that is built as a continuation of the hugely successful HiPParCoS telescope: the High Precision Parallax Collecting Satellite (HiPParCoS). Since 2013, Gaia has been generating the largest, most precise three-dimensional map of our Galaxy by surveying more than a thousand million stars. Gaia monitors every target star about 70 times over a five-year period recording their positions, distances, movements, and changes in brightness. It is expected to discover hundreds of thousands of new celestial objects, […]
















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