{"id":350474,"date":"2020-05-24T14:53:32","date_gmt":"2020-05-24T11:53:32","guid":{"rendered":"https:\/\/kinsta.unitedwithisrael.org\/?p=350474"},"modified":"2020-05-25T15:03:54","modified_gmt":"2020-05-25T12:03:54","slug":"historique-la-technologie-israelienne-bientot-sur-neptune","status":"publish","type":"post","link":"https:\/\/kinsta.unitedwithisrael.org\/fr\/historique-la-technologie-israelienne-bientot-sur-neptune\/","title":{"rendered":"Historique: La technologie isra\u00e9lienne bient\u00f4t sur Neptune!"},"content":{"rendered":"

La mission d’exploration spatiale Trident de la NASA pourrait transporter la technologie isra\u00e9lienne sur Neptune pour d\u00e9terminer si un oc\u00e9an souterrain sur sa plus grande lune contient de la vie.<\/strong><\/em><\/p>\n

Par Yakir Benzion, Unis avec Isra\u00ebl<\/em><\/p>\n

Lorsque la mission Trident sur Neptune propos\u00e9e par la NASA sera lanc\u00e9e en 2026, il y a de fortes chances que la technologie isra\u00e9lienne aide \u00e0 d\u00e9couvrir les secrets de la lune de glace unique et tr\u00e8s active de Neptune, Triton.<\/p>\n

Le professeur Yohai Kaspi de l’institut Weizmann fait partie de l’\u00e9quipe de mission spatiale propos\u00e9e qui esp\u00e8re enqu\u00eater sur l’existence et les propri\u00e9t\u00e9s de l’oc\u00e9an souterrain de Triton ainsi que sur la surface d’apparence jeune et l’atmosph\u00e8re unique de Triton.<\/p>\n

Triton n’est pas seulement super froid, avec une temp\u00e9rature de surface de \u2212235 degr\u00e9s Celsius. Il poss\u00e8de \u00e9galement des geysers actifs, ce qui signifie que la lune glac\u00e9e dispose d’une source de chaleur.<\/p>\n

Kaspi et le Dr Eli Galant, les deux isra\u00e9liens de l’\u00e9quipe Trident, poss\u00e8dent une expertise dans l’analyse des signaux radio provenant d’engins spatiaux lointains. Le vaisseau spatial Trident sera \u00e9quip\u00e9 d’une horloge scientifique sp\u00e9ciale qu’ils ont con\u00e7ue, si pr\u00e9cise qu’elle perdra moins d’une seconde en 10 millions d’ann\u00e9es.<\/p>\n

L’horloge sera construite par la soci\u00e9t\u00e9 de J\u00e9rusalem Accubeat pour r\u00e9sister aux rigueurs du voyage spatial pendant au moins 15 ans. Kaspi et Galant utiliseront l\u2019horloge pour calculer les propri\u00e9t\u00e9s de l\u2019atmosph\u00e8re de Triton sur la base du d\u00e9placement Doppler des ondes radio renvoy\u00e9es vers la Terre depuis le vaisseau spatial. L’horloge de fabrication isra\u00e9lienne les aidera \u00e0 mesurer de minuscules oscillations dans ces ondes.<\/p>\n

Accubeat construit d\u00e9j\u00e0 une horloge similaire qui sera lanc\u00e9e \u00e0 bord de la mission JUICE de l’Agence spatiale europ\u00e9enne sur les lunes de Jupiter, pr\u00e9vue pour 2022.<\/p>\n

\u00abCette horloge unique, d\u00e9velopp\u00e9e pour une mission phare de l’ESA, a suscit\u00e9 l’int\u00e9r\u00eat d’autres \u00e9quipes de mission. C’est la preuve que l’industrie et la recherche isra\u00e9liennes ont beaucoup \u00e0 apporter \u00e0 l’exploration spatiale internationale<\/em> \u00bb, a d\u00e9clar\u00e9 le directeur g\u00e9n\u00e9ral de l’Agence spatiale isra\u00e9lienne Avi Blasberger, dont l’organisation finance la recherche.<\/p>\n

En tant que l’un des quatre finalistes de 22 propositions soumises au programme Discovery de la NASA, l’\u00e9quipe Trident et trois autres propositions recevront chacune trois millions de dollars au cours de l’ann\u00e9e \u00e0 venir pour \u00e9laborer leurs plans avant que deux ne soient finalement s\u00e9lectionn\u00e9s pour des missions. Si tout se passe bien, la sonde interplan\u00e9taire devrait \u00eatre lanc\u00e9e en 2026 pour le voyage de plusieurs milliards de kilom\u00e8tres vers la troisi\u00e8me plus grande plan\u00e8te du syst\u00e8me solaire.<\/p>\n

La NASA envisage la mission de comprendre les voies futures vers des mondes habitables se trouvant \u00e0 des distances \u00e9normes du Soleil. La mission Voyager 2 de la NASA a montr\u00e9 que Triton pourrait poss\u00e9der un oc\u00e9an souterrain. Triton est con\u00e7u pour un seul survol afin de le cartographier, d’explorer les processus actifs sur la lune et de d\u00e9terminer si l’oc\u00e9an sous-marin pr\u00e9vu existe. Si la vie existe en dehors de la Terre, elle pourrait se cacher dans des oc\u00e9ans souterrains coulant sous la surface de lunes glac\u00e9es, et Triton est l’un des candidats les plus prometteurs.<\/p>\n

Triton est la plus grande des 14 lunes connues de Neptune et aussi une bizarrerie car elle orbite dans la direction oppos\u00e9e \u00e0 toutes les autres lunes de Neptune, ce qui conduit certains \u00e0 penser qu’elle provient de l’ext\u00e9rieur de notre syst\u00e8me solaire et peut \u00eatre un intrus pi\u00e9g\u00e9 il y a longtemps par la gravitation de Neptune.<\/p>\n

S’il \u00e9tait approuv\u00e9, Trident serait le premier visiteur terrestre sur Neptune et ses lunes en plus de 30 ans. Trident est cens\u00e9 \u00eatre plus petit, moins cher et \u00e0 plus court terme que les grandes missions qui d\u00e9collent une ou deux fois par d\u00e9cennie. Contrairement \u00e0 d’autres grandes missions de niveau politique ou de leadership, les missions D\u00e9couverte sont toutes propos\u00e9es, planifi\u00e9es et s\u00e9lectionn\u00e9es par des chercheurs.<\/p>\n

\u00abLa date de lancement est fix\u00e9e par la fen\u00eatre d’opportunit\u00e9 dans laquelle la configuration des plan\u00e8tes permettrait \u00e0 un vaisseau de la Terre d’atteindre Triton en seulement 12 ans. La prochaine fen\u00eatre d’opportunit\u00e9 ne se pr\u00e9sentera pas avant 2038<\/em> \u00bb, a d\u00e9clar\u00e9 Galant<\/p>\n

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La mission d’exploration spatiale Trident de la NASA pourrait transporter la technologie isra\u00e9lienne sur Neptune pour d\u00e9terminer si un oc\u00e9an souterrain sur sa plus grande lune contient de la vie. Par Yakir Benzion, Unis avec Isra\u00ebl Lorsque la mission Trident sur Neptune propos\u00e9e par la NASA sera lanc\u00e9e en 2026, il y a de fortes… Read more »<\/a><\/p>\n","protected":false},"author":4242,"featured_media":350476,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[28418],"tags":[28446,30854,38701,30225,28445],"class_list":["post-350474","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-israeliennes","tag-espace","tag-lune","tag-neptune","tag-planete","tag-technologie"],"better_featured_image":{"id":350476,"alt_text":"","caption":"Shutterstock","description":"","media_type":"image","media_details":{"width":2560,"height":1752,"file":"2020\/05\/shutterstock_418733776-scaled.jpg","sizes":{"medium":{"file":"shutterstock_418733776-300x205.jpg","width":300,"height":205,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-300x205.jpg"},"large":{"file":"shutterstock_418733776-1024x701.jpg","width":1024,"height":701,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-1024x701.jpg"},"thumbnail":{"file":"shutterstock_418733776-150x150.jpg","width":150,"height":150,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-150x150.jpg"},"medium_large":{"file":"shutterstock_418733776-768x525.jpg","width":768,"height":525,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-768x525.jpg"},"1536x1536":{"file":"shutterstock_418733776-1536x1051.jpg","width":1536,"height":1051,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-1536x1051.jpg"},"2048x2048":{"file":"shutterstock_418733776-2048x1401.jpg","width":2048,"height":1401,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-2048x1401.jpg"},"uwi-full-width":{"file":"shutterstock_418733776-760x520.jpg","width":760,"height":520,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-760x520.jpg"},"uwi-featured-carousel":{"file":"shutterstock_418733776-890x400.jpg","width":890,"height":400,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-890x400.jpg"},"uwi-featured-content":{"file":"shutterstock_418733776-290x160.jpg","width":290,"height":160,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-290x160.jpg"},"uwi-content-loop":{"file":"shutterstock_418733776-190x190.jpg","width":190,"height":190,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-190x190.jpg"},"uwi-category_list":{"file":"shutterstock_418733776-180x100.jpg","width":180,"height":100,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-180x100.jpg"},"uwi-tiny":{"file":"shutterstock_418733776-40x40.jpg","width":40,"height":40,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-40x40.jpg"},"uwi-email-featured":{"file":"shutterstock_418733776-250x170.jpg","width":250,"height":170,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-250x170.jpg"},"uwi-email":{"file":"shutterstock_418733776-200x140.jpg","width":200,"height":140,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-200x140.jpg"},"uwi-iphone":{"file":"shutterstock_418733776-960x640.jpg","width":960,"height":640,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-960x640.jpg"},"uwi-iphone-x2":{"file":"shutterstock_418733776-1136x640.jpg","width":1136,"height":640,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-1136x640.jpg"},"uwi-ipad":{"file":"shutterstock_418733776-1024x768.jpg","width":1024,"height":768,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithisrael.org\/wp-content\/uploads\/2020\/05\/shutterstock_418733776-1024x768.jpg"},"uwi-ipad-x2":{"file":"shutterstock_418733776-2048x1536.jpg","width":2048,"height":1536,"mime-type":"image\/jpeg","source_url":"https:\/\/kinsta.unitedwithis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