En 2022, la mission DART (Double Asteroid Redirection Test) de la NASA a réalisé la première démonstration de défense planétaire de l’histoire. Le 26 septembre 2022, la sonde s’est volontairement écrasée à ~22 000 km/h sur Dimorphos, un astéroïde de 160 mètres orbitant autour de Didymos, situé à environ 11 millions de kilomètres de la Terre. Objectif : tester une technique dite d’« impacteur cinétique » et modifier la trajectoire d’un astéroïde en le percutant. Résultat : la période orbitale de
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Bam NASA's Dart spacecraft slams into moonlet in asteroid system
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In 2022, our first planetary defense test mission, the Double Asteroid Redirection Test (DART), will attempt to change the motion of a small moonlet, Dimorphos, that poses no threat to Earth. This demonstration, led by the JHU Applied Physics Laboratory (APL), will test a new asteroid deflection technology: www.nasa.gov/dart | NASA - National Aeronautics and Space Administration
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