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Le Réseau Atlantico
Best-Of du 9 au 15 novembre
Et aussi : Des polarons ont été observés pour la première fois ; C'est ici que serait mort Jean le Baptiste il y a 2.000 ans ; Inédit : deux satellites en un pour arriver autour de Mars et revenir sur Terre
10 janvier 2021En 2020 et pour la toute première fois depuis le début des mesures il y a 50 ans, la Terre a tourné plus vite qu'à son habitude. Les scientifiques estiment que ce phénomène sera également constaté en 2021. Faudra-t-il recourir à une seconde intercalaire pour réajuster le temps ?
8 janvier 2021La seconde "additionnelle" aura pour but d'harmoniser les deux échelles de temps qui existent aujourd'hui : l'échelle du temps universel, et celle du temps atomique international.
29 décembre 2016
