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Cartographie de l'espaceLes astrophysiciens parviennent à un degré de précision de mesure de l’espace jamais atteint. Et découvrent que l’expansion de l’univers se fait encore plus vite que ce qu’ils pensaient
Le télescope spatial européen Gaia vient de dévoiler un nouveau catalogue de plus de près de deux milliards d'objets célestes de notre galaxie. Ces observations ont été menées avec une précision inégalée. Quels sont les apports scientifiques d’une telle cartographie de l’espace ?
22 décembre 2020