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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Asteroid deflection experiment ☄️💥 In 2022, NASA’s Double Asteroid Redirection Test (DART) slammed an uncrewed spacecraft into an asteroid named Dimorphos – which is 160 metres across but not heading towards our planet – and changed its trajectory slightly, suggesting that we could swat a space rock away in a real emergency. Methods other than this have yet to be tested, but the success of DART was a good omen for our chances against a genuine asteroid threat Tap link to learn more: https://www
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