Un Fragment De La Navette Spatiale Challenger Retrouvé 36 ans Après La Catastrophe

Le fragment a été trouvé lors d'une plongée au large des côtes de la Floride par une équipe de documentaires de History Channel à la recherche de l'épave d'un avion de la Seconde Guerre mondiale.

Un Fragment De La Navette Spatiale Challenger Retrouvé 36 ans Après La Catastrophe

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Un Fragment De La Navette Spatiale Challenger Retrouvé 36 ans Après La Catastrophe

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Par YEET MAGAZINE FRANCE | Mise à jour à 03h39 GMT (12h39 HKT) le 14 novembre 2022

La NASA a confirmé la découverte d'une section de la navette spatiale Challenger qui a explosé peu après son lancement en 1986 avec la perte tragique des sept membres d'équipage.

Le fragment a été trouvé lors d'une plongée au large des côtes de la Floride par une équipe de documentaires de History Channel à la recherche de l'épave d'un avion de la Seconde Guerre mondiale.

Une vidéo prise sur les lieux montre ce qui semble être certaines des tuiles de protection thermique de 8 pouces carrés de Challenger gisant sur le fond marin, partiellement recouvertes de sable. La pièce mesurerait environ 15 pieds carrés et pourrait provenir du dessous du vaisseau spatial.

La chaîne History Channel a partagé des images de plongeurs sur le site de l'océan Atlantique :

Réagissant à la découverte, le chef de la NASA, Bill Nelson, a commenté : « Alors que cela fait près de 37 ans que sept explorateurs audacieux et courageux ont perdu la vie à bord de Challenger, cette tragédie restera à jamais gravée dans la mémoire collective de notre pays.

"Pour des millions de personnes dans le monde, moi y compris, le 28 janvier 1986, c'est encore hier. Cette découverte nous donne l'occasion de faire une pause une fois de plus, de relever l'héritage des sept pionniers que nous avons perdus et de réfléchir à la façon dont cette tragédie nous a changés. À la NASA, la valeur fondamentale de la sécurité est – et doit toujours rester – notre priorité absolue, d'autant plus que nos missions explorent plus du cosmos que jamais auparavant.

La mission STS-51L Challenger a marqué le 25e vol orbital de la navette. Il était commandé par Francis R. "Dick" Scobee et piloté par Michael J. Smith. Les autres membres d'équipage comprenaient les spécialistes de mission Ronald E. McNair, Ellison S. Onizuka et Judith A. Resnik ; le spécialiste de la charge utile Gregory B. Jarvis ; et l'enseignante S. Christa McAuliffe.

La navette Challenger a subi un dysfonctionnement catastrophique 73 secondes après avoir quitté la rampe de lancement du Kennedy Space Center en Floride, provoquant l'explosion du véhicule en l'air.

Avant le lancement, certains membres du personnel de la mission avaient exprimé des inquiétudes quant à l'état de préparation du véhicule pour le vol, mais la NASA a décidé de continuer. Une enquête ultérieure sur la catastrophe a attribué la cause à des températures extrêmement froides ayant un impact sur l'intégrité des joints toriques dans les joints du segment de propulseur de fusée solide.

Près de la moitié du vaisseau spatial Challenger a été récupéré au fil des ans, la dernière découverte majeure comprenant deux fragments de l'aile gauche du véhicule, qui ont débarqué en 1996.

La découverte la plus récente restera là où les plongeurs l'ont trouvée tandis que l'agence spatiale réfléchit à la façon de la gérer d'une manière qui "honorera correctement l'héritage des astronautes tombés au combat de Challenger et des familles qui les ont aimés". a déclaré la NASA.

À partir de 1981, la NASA a effectué un total de 135 missions de navette spatiale. Le dernier, utilisant Atlantis, a atterri sans encombre en 2011 .

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