Cinéma, littérature, télévision, bande dessinée… Le voyage dans le temps est une intarissable source d’inspiration pour la fiction. Mais qu’en est-il du monde réel ? Peut-on fabriquer des machines à explorer le temps ? Et comment expliquer que le voyage à travers le temps existe déjà ? Voici ce qu’en pensent les chercheurs, au premier rang desquels Albert Einstein et Stephen Hawking.

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