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Astrophysique et cosmologie : "Quelques questions sur les trous noirs" Par Jean-Pierre Luminet dans la catégorie "Science & Technologie" |
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Astrophysique et relativité générale : Dans les secrets des trous noirs grâce à un radiotélescope sur la Lune dans la catégorie "Science & Technologie" |
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Astrophysique, espace-temps, relativité, et cosmologie : Étienne Klein reçoit Aurélien Barrau sur le mystère des trous noirs lors de son émission "La conversation scientifique" sur France Culture dans la catégorie "Science & Technologie" |
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Astrophysique, cosmologie, gravitation, et relativité : "Mystérieux trous noirs #2 : comment les détecter ?" ("Les ogres du cosmos") : dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22chalk%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%20%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADot%E9s%20d%27une%20%E9nergie%20ph%E9nom%E9nale%2C%20les%20trous%20noirs%20font%20partie%20des%20entit%E9s%20cosmiques%20les%20plus%20%E9nigmatiques.%20Un%20spectaculaire%20voyage%20%E0%20la%20d%E9couverte%20de%20ces%20monstres%20voraces%20qui%20engloutissent%20tout%20sur%20leur%20passage.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADe%20tous%20les%20ph%E9nom%E8nes%20cosmiques%2C%20les%20trous%20noirs%20sont%20les%20plus%20fascinants.%20Engins%20de%20destruction%20apocalyptiques%2C%20ils%20font%20dispara%EEtre%20tout%20ce%20qui%20passe%20%E0%20leur%20port%E9e%20%3A%20particules%2C%20poussi%E8res%2C%20gaz%2C%20plan%E8tes%20et%20m%EAme%20%E9toiles%20g%E9antes%20%21%20La%20science%20dispose%20aujourd%27hui%20de%20pr%E9cieuses%20donn%E9es%20pour%20mieux%20appr%E9hender%20ces%20entit%E9s%20pr%E9sentes%20dans%20chaque%20galaxie%2C%20y%20compris%20la%20n%F4tre.%20Le%2011%20f%E9vrier%202016%2C%20l%27annonce%20de%20la%20d%E9tection%20de%20la%20collision%2C%20il%20y%20a%20un%20milliard%20d%3Fann%E9es%2C%20entre%20deux%20trous%20noirs%20et%20la%20d%E9couverte%20des%20ondes%20gravitationnelles%20qui%20a%20d%E9coul%E9%20de%20cet%20%E9v%E9nement%20ont%20fondamentalement%20chang%E9%20la%20compr%E9hension%20que%20nous%20avions%20de%20la%20formation%20de%20l%27Univers.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3E%C9clairages%26nbsp%3B%3C%2Fspan%3E%3Cbr%3E%0D%0ADans%20ce%20passionnant%20documentaire%2C%20Rushmore%20DeNooyer%20%28La%20bombe%29%20nous%20entra%EEne%20%E0%20la%20rencontre%20d%27astronomes%20et%20de%20physiciens%2C%20parmi%20lesquels%20de%20nombreuses%20femmes%2C%20en%20pointe%20dans%20la%20recherche%20et%20les%20derni%E8res%20technologies%20d%27observation%20du%20cosmos.%20Pilot%E9%20par%20l%3Fastrophysicienne%20Janna%20Levin%20et%20enrichi%20d%27images%20spectaculaires%2C%20un%20%E9clairage%20captivant%20sur%20l%27origine%20des%20trous%20noirs%2C%20leur%20composition%20et%20leur%20fonctionnement%2C%20mais%20%E9galement%20sur%20ce%20que%20leur%20%E9tude%20peut%20nous%20apprendre%20sur%20la%20nature%20de%20l%3Fespace%2C%20du%20temps%20et%20de%20la%20gravit%E9.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADocumentaire%20de%20Rushmore%20DeNooyer%20%28Etats-Unis%2C%202017%2C%2053mn%29%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20excellent%20documentaire%20de%20vulgarisation.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Astrophysique, gravitation, relativité, et cosmologie : "Mystérieux trous noirs #1 : comment se forment-ils ?" ("Anatomie d'un trou noir") : dans la catégorie "Science & Technologie" |
%3Cp%20class%3D%22DKKeswick%22%3EUne%20excellente%20vid%E9o%20par%20certains%20aspects%2C%20mais%20comportant%20de%20mon%20point%20de%20vue%20quatre%20erreurs%20%3A%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20class%3D%22DKKeswick%22%3E1%29%20La%20singularit%E9%20n%27existe%20pas%20%3A%20c%27est%20une%20aberration%20d%E9coulant%20d%27%E9quation%20fausses%20aux%20extr%EAmes.%20L%27infini%20n%27existe%20sous%20aucune%20forme%20dans%20l%27Univers%2C%20sinon%20l%27Univers%20ne%20pourrait%20pas%20exister.%20Si%20une%20%E9quation%20fait%26nbsp%3Bappara%EEtre%20un%20infini%2C%20c%27est%20que%20l%27%E9quation%20est%20fausse%20compl%E8tement%2C%20ou%20partiellement%20aux%20extr%EAmes.%20Ceci%20pour%20dire%20qu%27il%20y%20a%20un%20astre%20en%20rotation%20au%20centre%20du%20trou%20noir%2C%20constitu%E9%20de%20mati%E8re%20%22exotique%22%2C%20de%20particules%20les%20plus%20fines%20qu%27il%20est%20possible%20d%27exister%2C%20et%20en%20rotation%20plus%20rapide%20qu%27un%20pulsar.%3Cbr%3E%0D%0A2%29%20Pas%20de%20trou%20de%20vers%20cons%E9quemment%20au%20point%201.%3Cbr%3E%0D%0A3%29%20Passer%20l%27horizon%20des%20%E9v%E9nements%20est%20fatidique%20et%20mortel%20puisque%20on%20est%20hach%E9%20au%20niveau%20quantique%2C%20l%27espace%20%E9tant%20referm%E9%20sur%20lui-m%EAme%20%E0%20ce%20niveau%20et%20coupant%20en%20deux%20au%20niveau%20le%20plus%20fin%20tout%20ce%20qui%20entre.%20Pour%20appr%E9hender%20cette%20notion%2C%20imaginez%20que%20vous%20ayez%20les%20jambes%20dans%20le%20trou%20noir%20et%20le%20reste%20dans%20l%27Univers%20%3A%20vous%20%EAtes%20scind%E9s%20en%20deux%20de%20mani%E8re%20irr%E9m%E9diable.%20Donc%2C%20quand%20vous%20p%E9n%E9trez%20progressivement%2C%20l%27espace-temps%20qui%20est%20referm%E9%20sur%20lui%20m%EAme%20%E0%20cet%20endroit%20vous%20hache%20contin%FBment%20au%20niveau%20quantique.%3Cbr%3E%0D%0A4%29%20L%27horizon%20des%20%E9v%E9nements%20usuel%20n%27est%20pas%20unique%20%3A%20c%27est%20le%20dernier%20horizon%20des%20%E9v%E9nements%20visible%2C%20c%27est-%E0-dire%20celui%20qui%20est%20le%20plus%20externe.%20En%20r%E9alit%E9%2C%20jusqu%27au%20centre%2C%20il%20y%20a%20un%20gradient%20d%27horizons%20des%20%E9v%E9nements%20qui%20impliquent%20plusieurs%20choses%20%3A%3Cbr%3E%0D%0A-%20L%27%E9coulement%20de%20l%27espace%20devient%20oblig%E9%2C%20in%E9luctable%20comme%20l%27est%20le%20temps%20pour%20nous%20dans%20notre%20Univers.%3Cbr%3E%0D%0A-%20La%20seule%20direction%20possible%20est%20vers%20le%20centre%20du%20trou%20noir%20%28avec%20peut-%EAtre%20des%20effets%20spiral%E9s%20terribles%20dus%20%E0%20la%20topologie%20du%20tissus%20de%20l%27espace%20temps%2C%20mais%20c%27est%20une%20ligne%20droite%20dans%20un%20gradient%20probablement%20d%E9form%E9%29.%26nbsp%3BToute%20autre%20direction%20est%20impossible%20en%20raison%20de%20l%27empilement%20des%20divers%20horizons%20des%20%E9v%E9nements%20au%20niveau%20quantique.%20Aucun%20retour%20en%20arri%E8re%20n%27est%20donc%20possible%20au%20fur%20et%20%E0%20mesure%20qu%27on%20progresse%20vers%20le%20centre.%3Cbr%3E%0D%0A-%20Le%20hachage%20se%20poursuit%20contin%FBment.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20class%3D%22DKKeswick%22%3EJe%20suis%20parvenu%20%E0%20ces%20%E9tonnantes%20conclusions%20en%20r%E9fl%E9chissant%20par%20moi-m%EAme%2C%20et%20en%20refusant%20certaines%20aberrations%20propag%E9es%20par%20les%20scientifiques.%20Je%20pense%20qu%27avec%20le%20temps%2C%20certains%20d%27entre%20eux%20parviendront%26nbsp%3Bfinalement%20aux%20m%EAmes%20conclusions.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20class%3D%22DKKeswick%22%3ENotamment%2C%20je%20suis%20parti%20du%20fait%20que%20si%20le%20trou%20noir%20est%20capable%20de%20refermer%20l%27espace-temps%20%E0%20la%20distance%20R%20%3D%20le%20rayon%20de%20Schwarzschild%2C%20alors%20bien%20%E9videmment%2C%20il%20est%20capable%20de%20r%E9aliser%20cet%20exploit%20%E0%20une%20distance%20inf%E9rieure%20%E0%26nbsp%3BR%20et%20ainsi%20de%20suite.%20Qui%20peut%20le%20plus%20peut%20le%20moins.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20class%3D%22DKKeswick%22%3EEnfin%2C%20l%27infini%20ne%20peut%20exister%20parce-que%20si%20un%20objet%20%28aussi%20gros%20ou%20petit%20que%20vous%20voulez%29%20avait%20une%20propri%E9t%E9%20infinie%2C%20alors%20l%27Univers%20cesserait%20d%27exister.%20Par%20exemple%20%3A%3Cbr%3E%0D%0A-%20Une%20temp%E9rature%20infinie%20%3D%20nous%20sommes%20tous%20grill%E9s.%3Cbr%3E%0D%0A-%20Une%20masse%20infinie%20%3D%20l%27univers%20est%20un%20trou%20noir%20de%20taille%20infinie.%3Cbr%3E%0D%0A-%20Etc.%3C%2Fp%3E
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Astrophysique et relativité : "Et si vous plongiez dans un trou noir ?" Par Balade Mentale dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22chalk%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%20%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AConf%E9rence%20de%20l%27astrophysicien%20Aur%E9lien%20Barrau%20lors%20de%20la%2011e%20%E9dition%20des%20Rencontres%20du%20ciel%20et%20de%20l%27espace%2C%20le%202%20novembre%2C%20%E0%20la%20Cit%E9%20des%20sciences%20et%20de%20l%27industrie.%20La%20th%E9orie%20d%3FEinstein%20est%20magnifique%20et%20remarquable%20mais%20elle%20n%3Fest%20pas%20%AB%20compl%E8te%20%BB.%20Il%20faut%20aller%20au-del%E0%20pour%20prendre%20en%20compte%20la%20physique%20quantique.%20Je%20pr%E9senterai%20les%20id%E9es%20g%E9n%E9rales%20de%20la%20gravitation%20quantique%20et%20l%3Fimage%20r%E9volutionnaire%20%E0%20laquelle%20elle%20m%E8ne%20quand%20on%20l%3Fapplique%20aux%20trous%20noirs%20et%20au%20Big%20Bang.%20Nous%20%E9tudierons%20la%20nouvelle%20image%20du%20monde%20qui%20se%20dessine%20et%20interrogerons%20sa%20l%E9gitimit%E9%20et%20sa%20cr%E9dibilit%E9.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EEn%20dehors%20de%20l%27introduction%20et%20de%20la%20fin%2C%20merdiquement%20po%E9tiques%20et%20totalement%20inutiles%2C%20une%20excellente%20conf%E9rence.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3ESeule%20question%20que%20je%20me%20pose%2C%20hormis%20la%20singularit%E9%26nbsp%3Bn%27existe%20pas%2C%20c%27est%20un%20astre%26nbsp%3B%3A%20je%20doute%20que%20le%20passage%20de%20l%27horizon%20des%20%E9v%E9nements%26nbsp%3Bsoit%20imperceptible%20dans%20la%20mesure%20o%F9%20c%27est%20l%27endroit%20o%F9%20l%27espace-temps%20est%20referm%E9%20sur%20lui-m%EAme.%20Un%20voyageur%20doit%20%EAtre%20coup%E9%20en%20deux%20contin%FBment%20au%20fur%20et%20%E0%20mesure%20qu%27il%20passe%20cette%20fronti%E8re%20car%20une%20partie%20de%20lui-m%EAme%20est%20dans%20l%27Univers%2C%20et%20l%27autre%20dans%20le%20trou%20noir.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Astronomie, astrophysique, espace-temps, et relativité : "Trous noirs et gravitation quantique" par Aurélien Barrau dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E66%20milliards%20de%20masse%20solaires%20pour%20TON%20618...%20Une%20belle%20b%EAte...%26nbsp%3B%3Cimg%20border%3D%220%22%20src%3D%22IMAGES%2FICONES%2FIcone%2520-%2520Choqu%25E9.gif%22%3E%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUne%20vid%E9o%20moins%20impressionnante%20que%26nbsp%3B%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3FNumVideo%3D8465%22%20target%3D%22_blank%22%3E%5Bcelle-ci%5D%3C%2Fa%3E%20%28%3Cimg%20align%3D%22absmiddle%22%20border%3D%220%22%20height%3D%2225%22%20src%3D%22IMAGES%2FNouvelle%2520Fenetre%252025x25.gif%22%20width%3D%2225%22%3E%29%2C%20mais%20quand%20m%EAme...%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3ENota%20Bene%20%3A%20la%20liste%20des%20trous%20noirs%20les%20plus%20massifs%20est%20disponible%20sur%20la%20page%20anglaise%20de%20Wikip%E9dia%2C%26nbsp%3B%3Ca%20href%3D%22https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FList_of_most_massive_black_holes%22%20target%3D%22_blank%22%3E%5Bici%5D%3C%2Fa%3E%20%28%3Cimg%20align%3D%22absmiddle%22%20border%3D%220%22%20height%3D%2225%22%20src%3D%22IMAGES%2FNouvelle%2520Fenetre%252025x25.gif%22%20width%3D%2225%22%3E%29%20%28La%20page%20fran%E7aise%20n%27est%20pas%20tenue%20%E0%20jour%29.%3C%2Fp%3E
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Astronomie et astrophysique : une comparaison de la taille des trous noirs au début 2018 : dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EPensez%20%E0%20activer%20les%20sous-tites.%3Cbr%3E%3Cbr%3ELes%20trous%20noirs%20supermassifs%20sont%20effrayants.%20Certain%20ont%20une%20taille%20faisant%20plusieurs%20fois%20la%20taille%20de%20tout%20le%20syst%E8me%20solaire...%20Ce%20sont%20de%20v%E9ritables%20monstres.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EEn%20plus%20impressionnant%2C%26nbsp%3Bvoyez%20cette%20%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3FNumVideo%3D8465%22%20target%3D%22_blank%22%3E%5Bvid%E9o%5D%3C%2Fa%3E%20%28%3Cimg%20align%3D%22absmiddle%22%20border%3D%220%22%20height%3D%2225%22%20src%3D%22IMAGES%2FNouvelle%2520Fenetre%252025x25.gif%22%20width%3D%2225%22%3E%29.%3C%2Fp%3E
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Astrophysique : "La terrifiante échelle des trous noirs" dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUne%20synth%E8se%20passionnante.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Astrophysique, relativité, et cosmologie : "La Méthode scientifique - Les Trous noirs" avec Alain Riazuelo et Éric Gourgoulhon France Culture - 21 Février 2017 dans la catégorie "Science & Technologie" |
%3Cp%3EUne%20conf%E9rence%20id%E9ale%20pour%20les%20jeunes%20ainsi%20que%20pour%20pour%20tous%20ceux%20qui%20n%27y%20connaissent%20rien.%3Cbr%3E%3Cbr%3E%C0%20voir%20%21%3C%2Fp%3E
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Astrophysique et astronomie : "Qu'est-ce qu un trou noir, très simplement ?", une conférence d'Aurélien Barrau dans la catégorie "Science & Technologie" |
%3Cp%3EUne%20courte%20vid%E9o%20sympathique%20de%20plus%20sur%20les%20trous%20noirs.%3C%2Fp%3E
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Astrophysique et astronomie : "Peut-on sortir d'un trou noir ?" dans la catégorie "Science & Technologie" |
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Astrophysique, pulsars, trous noirs, et ondes gravitationnelles : "L'astronomie gravitationnelle à l'écoute du côté obscur de l'Univers" par Éric Chassande-Mottin - Novembre 2016 dans la catégorie "Science & Technologie" |
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Cosmologie : "Habitons-nous un trou noir et pourquoi devrions-nous en soucier ?" par David Elbaz ou une nouvelle théorie révolutionnaire de la gravitation qui serait une propriété émergente dans la catégorie "Science & Technologie" |
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Astrophysique étonnante et relativité : une magnifique comparaison des différentes tailles de trous noirs dans la catégorie "Science & Technologie" |
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Ondes gravitationnelles :"Signaux gravitationnels de trous noirs, on les a entendu !", une conférence grand public de Damir Buskulic dans la catégorie "Science & Technologie" |
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"Science étonnante - Les trous noirs" dans la catégorie "Science & Technologie" |
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Physique quantique, relativité, et astrophysique : comment le LHC du CERN engendre des minis trous noirs (et l'immense possible danger qui en découle de disparition de l'Humanité et de la Terre toute entière) dans la catégorie "Science & Technologie" |
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Astrophysique : mythes et légendes autour des trous noirs, et réalité dans la catégorie "Science & Technologie" |
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Relativité : comment l'immense gravité des planètes, des étoiles, et des trous noirs, déforme le tissus de l'espace-temps dans la catégorie "Science & Technologie" |
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%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EAffaire%20%E0%20suivre...%3C%2Fp%3E
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Nouvelle énigme en astronomie et en astrophysique : la fusion de trous noirs ne semble pas émettre d'ondes gravitationnelles et perturber la périodicité des signaux radio des pulsars dans la catégorie "Science & Technologie" |
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Astronomie et astrophysique de la vie et de la mort des étoiles : séquence principale, géantes rouges, naine blanches, supernovae, et trous noirs dans la catégorie "Science & Technologie" |
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"Passe-science #4 - Trou Noir" ou les étranges orbites dues à l'effet Lense-Thirring autour d'un trou noir de Kerr dans la catégorie "Science & Technologie" |
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"Voyage dans un trou noir" ou les étranges phénomènes visuels d'une descente dans le coeur d'un trou noir de Schwarzschild dans la catégorie "Science & Technologie" |
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"La naissance d'un trou noir" ou la longue aventure scientifique des sursauts gamma dans la catégorie "Science & Technologie" |
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Must
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Tomber dans un trou noir : les étranges phénomènes de la spaghettification et de la singularité dans la catégorie "Science & Technologie" |
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L'étude du trou noir supermassif au centre de la Galaxie avec l'interféromètre GRAVITY, une conférence de Guy Perrin - 11 Décembre 2012 dans la catégorie "Science & Technologie" |
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Le télescope Event Horizon, un réseau mondial d'antennes pour tenter de voir pour la première fois le trou noir supermassif niché au centre de notre galaxie dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECette%20vid%E9o%20est%20un%20court%20entretien%20o%F9%20Jean-Pierre%20Luminet%2C%20%0D%0Agrand%20sp%E9cialiste%20des%20trous%20noirs%2C%20nous%20donne%20des%20pr%E9cisions%20%E9clairantes%20sur%20les%20%0D%0Amicro%20trous%20noirs%20et%20le%20rayonnement%20de%20Hawking.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EClair%2C%20didactique%2C%20pr%E9cis%2C%20et%20tr%E8s%20int%E9ressant.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%C0%20voir%20%21%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cb%3ENota%20Bene%20%3A%20pour%20un%20meilleur%20confort%20auditif%2C%20j%27ai%20rehauss%E9%20le%20son%20de%20cette%20vid%E9o%20de%204%20dB.%3C%2Fb%3E%3C%2Fp%3E
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Gravitation, relativité, et physique quantique : Jean-Pierre Luminet sur l'évaporation des micro trous noirs et le rayonnement de (Stephen) Hawking dans la catégorie "Science & Technologie" |
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"La forme de l'espace : des trous noirs à l'Univers chiffonné" par Jean-Pierre Luminet - 11 janvier 2011 dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22center%22%3E%0D%0A%3Cimg%20border%3D%221%22%20src%3D%22IMAGES%2Ftrou_noir_riazuelo.jpg%22%20width%3D%221024%22%20height%3D%22725%22%3E%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EUne%20vid%E9o%20superbe%2C%20racontant%20ce%20qui%20se%20produirait%20si%20un%20trou%20%0D%0Anoir%20errant%20venait%20%E0%20p%E9n%E9trer%20notre%20syst%E8me%20solaire.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EGarre%20%E0%20vos%20fesses%20%21%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EUn%20must%20%21%3C%2Fp%3E
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Spectaculaire et terrifiant : ce qui arriverait à la Terre si un trou noir pénétrait dans notre système solaire dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECe%20qui%20%E9tonne%20les%20astronomes%20et%20les%20cosmologistes%2C%20c%27est%20%0D%0Acomment%20un%20tel%20trou%20noir%20a%20pu%20se%20former%20aussi%20t%F4t.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EIl%20est%20bien%20%E9videment%20que%20si%20on%20arrive%20%E0%20trouver%20des%20trous%20%0D%0Anoirs%20aussi%20massif%20form%E9s%20aussi%20t%F4t%20dans%20l%27histoire%20de%20l%27Univers%2C%20alors%20il%20doit%20%0D%0Aen%20exister%20certains%20qui%20doivent%20%EAtre%20encore%20plus%20gigantesques%2C%20ayant%20eu%20le%20%0D%0Aloisir%20de%20grossir%20depuis%20tout%20ce%20temps.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%C0%20conna%EEtre.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cb%3ENota%20Bene%20%3A%20pour%20un%20meilleur%20confort%20auditif%2C%20j%27ai%20rehauss%E9%20le%20son%20de%20cette%20vid%E9o%20de%205%20dB.%3C%2Fb%3E%3C%2Fp%3E
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Découverte d'un trou noir supermassif, dont le QUASAR brille comme 40.000 fois notre Voie Lactée - Février 2015 dans la catégorie "Science & Technologie" |
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Un trou noir supermassif gigantesque découvert dans la galaxie NGC 1277 avec Jean-Pierre Luminet - 29 Novembre 2012 dans la catégorie "Science & Technologie" |
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L'histoire de la découverte et des preuves de l'existence d'un trou noir supermassif au coeur de notre Voie Lactée dans la catégorie "Science & Technologie" |
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Le dîner du trou noir supermassif central de notre galaxie se rapproche rapidement... dans la catégorie "Science & Technologie" |
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"Les plus grands trous noirs dans l'univers" - Version 2 dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECette%20vid%E9o%20est%20un%20documentaire%20de%20la%20s%E9rie%20%26quot%3B%3Ci%3EL%27Univers%3C%2Fi%3E%26quot%3B%20%0D%0Aportant%20sur%20les%20quasars%20et%20les%20pulsars%2C%20ces%20astres%20fascinants.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cu%3E%3Cb%3E%3Cfont%20size%3D%225%22%3ESynopsis%20%3A%3C%2Ffont%3E%3C%2Fb%3E%3C%2Fu%3E%3C%2Fp%3E%0D%0A%3Cblockquote%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3EUn%20pulsar%20est%20le%20nom%20donn%E9%20%E0%20l%27objet%20astrophysique%20%0D%0A%09produisant%20un%20signal%20p%E9riodique%2C%20de%20fr%E9quences%20allant%20de%20l%27ordre%20de%20la%20%0D%0A%09milliseconde%20%E0%20quelques%20dizaines%20de%20secondes.%20Il%20est%20consid%E9r%E9%20comme%20%E9tant%20%0D%0A%09une%20%E9toile%20%E0%20neutrons%2C%20tournant%20tr%E8s%20rapidement%20sur%20elle-m%EAme%20%28p%E9riode%20%0D%0A%09typique%20de%20l%27ordre%20de%20la%20seconde%2C%20voire%20beaucoup%20moins%20pour%20les%20pulsars%20%0D%0A%09milliseconde%29%20et%20%E9mettant%20un%20fort%20rayonnement%20%E9lectromagn%E9tique%20dans%20la%20%0D%0A%09direction%20de%20son%20axe%20magn%E9tique.Pulsar%20est%20l%27abr%E9viation%20de%20%AB%20pulsating%20%0D%0A%09radio%20source%20%BB%20%28source%20radio%20pulsante%29.%20Cette%20hypoth%E8se%20s%27est%20rapidement%20%0D%0A%09r%E9v%E9l%E9e%20incorrecte%2C%20mais%20le%20nom%20est%20rest%E9%20%2Ctandis%20que%20le%20quasar%20%AB%20source%20de%20%0D%0A%09rayonnement%20quasi-stellaire%20%BB%2C%20%28quasi-stellar%20radio%20source%20en%20anglais%29%20est%20%0D%0A%09une%20galaxie%20lointaine%20et%20tr%E8s%20%E9nerg%E9tique%20avec%20un%20noyau%20galactique%20actif.%20Ce%20%0D%0A%09sont%20les%20objets%20les%20plus%20lumineux%20de%20l%27univers.%20%28%3C%2Fp%3E%0D%0A%3C%2Fblockquote%3E%0D%0A%3Cp%20align%3D%22justify%22%3ECette%20vid%E9o%20n%27a%20pas%20encore%20%E9t%E9%20%E9valu%E9e.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cb%3ENota%20Bene%20%3A%20si%20vous%20souhaitez%20obtenir%20la%20liste%20de%20tous%20les%20%0D%0Adocumentaires%20de%20cette%20s%E9rie%20disponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dl%27Univers%20%3A%20%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"L'Univers : Pulsars et Quasars (des trous noirs)" dans la catégorie "Science & Technologie" |
Vid%E9o%20non%20encore%20%E9valu%E9e.
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"Les quasars, c'est quoi ça ?" : des trous noirs dans la catégorie "Science & Technologie" |
Une%20vid%E9o%20d%27introduction%20bien%20accessible%20et%20pour%20tout%20public.%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20afficher%20la%20liste%20de%20toutes%20les%20vid%E9os%20de%20la%20s%E9rie%20%26quot%3B%3Ci%3EK%E9sako%20%3F%3C%2Fi%3E%26quot%3B%20disponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dk%25E9zako%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Kézako ? Qu'est ce qu'un trou noir ?" dans la catégorie "Science & Technologie" |
%3Cp%3ECette%20vid%E9o%20est%20une%20conf%E9rence%20de%20Suzy%20Collin-Zahn%2C%20chercheur%20associ%E9e%20%E0%20%0D%0Al%27Observatoire%20de%20Paris%20Meudon%2C%20au%20LUTh%20%28Laboratoire%20Univers%20Th%E9ories%29%2C%20et%20qui%20%0D%0As%27est%20beaucoup%20int%E9ress%E9e%20aux%20quasars%20et%20aux%20trous%20noirs.%3C%2Fp%3E%0D%0A%3Cp%3ESes%20derniers%20ouvrages%20%3A%3C%2Fp%3E%0D%0A%3Cul%3E%0D%0A%09%3Cli%3EDes%20Quasars%20aux%20trous%20noirs%20chez%20EDP.%3C%2Fli%3E%0D%0A%09%3Cli%3EQuelle%20est%20notre%20place%20dans%20l%27Univers%20%28avec%20C%20Villain%29%20chez%20L%27Harmattan.%3C%2Fli%3E%0D%0A%3C%2Ful%3E%0D%0A%3Cp%3ECette%20vid%E9o%20n%27a%20pas%20encore%20%E9t%E9%20%E9valu%E9e.%3C%2Fp%3E%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20rendre%20plus%20audible%20la%20conf%E9rence%2C%20j%27ai%20diminu%E9%20le%20son%20qui%20saturait%20de%2012%20dB.%3C%2Fb%3E%3C%2Fp%3E
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"Le mystère des trous noirs" par Suzy Collin-Zahn - 10 Novembre 2012 - Version avec son diminué dans la catégorie "Science & Technologie" |
Cette%20vid%E9o%20n%27a%20pas%20encore%20%E9t%E9%20%E9valu%E9e.
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"Trou noir tout noir, la preuve scientifique que tout ne fait qu'un", ou la théorie de Nassim Haramein dans la catégorie "Science & Technologie" |
%3Cp%3ECette%20vid%E9o%2C%20produite%20par%20la%20BBC%20en%202000%2C%20n%27a%20pas%20encore%20%E9t%E9%20%E9valu%E9e.%3C%2Fp%3E
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"Supermassive black holes" (Les trous noirs supermassifs) dans la catégorie "Science & Technologie" |
Cette%20vid%E9o%20n%27a%20pas%20encore%20%E9t%E9%20%E9valu%E9e%20compl%E8tement.
Évaluée
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Un trou noir supermassif au coeur de la Voie Lactée dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECette%20vid%E9o%20est%20un%20documentaire%20sur%20les%20trous%20noirs%20%3A%20%0D%0Ahistoire%20de%20leur%20th%E9orie%2C%20d%E9couvertes%20progressives%2C%20et%20leur%20r%F4le%20dans%20%0D%0Al%27%E9volution%20des%20galaxies%20et%20de%20l%27univers%20en%20g%E9n%E9ral.%3C%2Fp%3E%0D%0A%3Cp%3E%3Cu%3E%3Cb%3E%3Cfont%20size%3D%225%22%3ESynopsis%20%3A%3C%2Ffont%3E%3C%2Fb%3E%3C%2Fu%3E%3C%2Fp%3E%0D%0A%3Cblockquote%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3ELes%20trous%20noirs%20%E0%20l%27origine%20des%20galaxies%26nbsp%3B%3F%3C%2Fp%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3EIl%20y%20a%20encore%20peu%20de%20temps%2C%20on%20ne%20connaissait%20presque%20%0D%0A%09rien%20des%20ph%E9nom%E8nes%20extraordinaires%20que%20sont%20les%20trous%20noirs.%20Aujourd%27hui%2C%20%0D%0A%09les%20scientifiques%20ne%20sont%20plus%20les%20seuls%20%E0%20connaitre%20l%27existence%20de%20ces%20%0D%0A%09monstres.%20Des%20astronomes%20ont%20d%E9couvert%20la%20preuve%20qu%27il%20y%20en%20aurait%20un%20dans%20%0D%0A%09chaque%20galaxie%2C%20et%20qu%27ils%20joueraient%20un%20r%F4le%20capital%20dans%20la%20cr%E9ation%20de%20ces%20%0D%0A%09derni%E8res.%20Le%20trou%20noir%20de%20la%20Voie%20Lact%E9e%20pourrait%20%EAtre%20%E0%20l%27origine%20de%20son%20%0D%0A%09existence.%20Mais%20que%20se%20passera-t-il%20lorsque%20notre%20galaxie%20entrera%20en%20contact%20%0D%0A%09avec%20la%20galaxie%20voisine%20Androm%E8de%26nbsp%3B%3F%3C%2Fp%3E%0D%0A%09%3Cp%3ESource%20%3A%0D%0A%09Internet%3C%2Fp%3E%0D%0A%3C%2Fblockquote%3E%0D%0A%3Cp%3EUn%20magnifique%20documentaire%2C%20pour%20tout%20public%2C%20bien%20progressif%2C%20tr%E8s%20doux%2C%20bien%20didactique%2C%20absolument%20passionnant%2C%20ayant%20m%EAme%20un%20caract%E8re%20un%20peu%20po%E9tique%20gr%E2ce%20aux%20%0D%0Aillustrations%20sonores%20particuli%E8rement%20bien%20choisies.%20Un%20must.%20%C0%20voir%20par%20tous%20%0D%0Ales%20amoureux%20et%20les%20curieux%20des%20trous%20noirs.%3C%2Fp%3E
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"L'aventure spatiale - Trous noirs : la menace" dans la catégorie "Science & Technologie" |
%22%3Ci%3EUne%20%E9quipe%20de%20chercheurs%20attach%E9e%20%E0%20l%27Agence%20spatiale%20europ%E9enne%20ont%20suivi%20durant%2016%20ans%20la%20trajectoire%20de%2028%20%E9toiles%20autour%20du%20centre%20de%20la%20Voie%20lact%E9e.%20Leur%20objectif%3A%20mettre%20en%20%E9vidence%20la%20pr%E9sence%20d%27un%20trou%20noir%20supermassif.%3C%2Fi%3E%3Cbr%3E%3Cbr%3EUne%20aventure%20%E9tonnante%20r%E9alis%E9e%20gr%E2ce%20au%20g%E9nie%20humain%20et%20%E0%20un%20formidable%20instrument%20%3A%20le%20VLT.
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Comment des chercheurs de l'ESO ont découvert avec le VLT un trou noir super-massif au centre de la Voie Lactée dans la catégorie "Science & Technologie" |
Voici%20une%20jolie%20et%20courte%20vid%E9o%20tr%E8s%20graphique%2C%20extraite%20du%20documentaire%20%26quot%3B%3Ci%3EDu%20%0D%0ABig%20Bang%20au%20vivant%26quot%3B%2C%3C%2Fi%3E%20sur%20les%20trous%20noirs%20et%20leurs%20manifestations%20hyper-violentes%20et%20cosmiques.%3Cp%3E%C0%20voir%20%21%3C%2Fp%3E%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%201%20%3A%20le%20documentaire%20complet%20%26quot%3B%3Ci%3E%3Cfont%20color%3D%22%23FF0000%22%3EDu%20Big%20%0D%0ABang%20au%20vivant%3C%2Ffont%3E%3C%2Fi%3E%26quot%3B%20peut%20%EAtre%20%E9galement%20vu%20ce%20site%2C%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3FNumVideo%3D6135%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%202%20%3A%20pour%20afficher%20la%20liste%20de%20toutes%20les%20vid%E9os%20d%27Hubert%20Reeves%20disponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3DHubert%2520Reeves%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%203%20%3A%20pour%20afficher%20la%20liste%20de%20toutes%20les%20vid%E9os%20de%20Jean-Pierre%20Luminet%20disponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3DJean-Pierre%2520Luminet%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Comment détecter les trous noirs ?" par Hubert Reeves et Jean-Pierre Luminet dans la catégorie "Science & Technologie" |
Une%20courte%20vid%E9o%20pour%20tous%20publics%2C%20extraite%20du%20documentaire%20%26quot%3B%3Ci%3EDu%20%0D%0ABig%20Bang%20au%20vivant%26quot%3B%2C%3C%2Fi%3E%20bien%20graphique%20et%20tr%E8s%20agr%E9able%20et%20sympa%20%E0%20regarder.%3Cp%3E%3Cb%3ENota%20Bene%201%20%3A%20le%20documentaire%20complet%20%26quot%3B%3Ci%3E%3Cfont%20color%3D%22%23FF0000%22%3EDu%20Big%20%0D%0ABang%20au%20vivant%3C%2Ffont%3E%3C%2Fi%3E%26quot%3B%20peut%20%EAtre%20%E9galement%20vu%20ce%20site%2C%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3FNumVideo%3D6135%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%202%20%3A%20pour%20afficher%20la%20liste%20de%20toutes%20les%20vid%E9os%20d%27Hubert%20Reeves%20disponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3DHubert%2520Reeves%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%203%20%3A%20pour%20afficher%20la%20liste%20de%20toutes%20les%20vid%E9os%20de%20Jean-Pierre%20Luminet%20disponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3DJean-Pierre%2520Luminet%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Qu'est-ce qu'un trou noir ?" par Hubert Reeves et Jean-Pierre Luminet dans la catégorie "Science & Technologie" |
%22%3Ci%3ELe%20record%20de%20masse%20pour%20un%20trou%20noir%2C%20d%E9tenu%20depuis%20janvier%202008%2C%20est%20de%2018%20milliards%20de%20fois%20celui%20du%20Soleil%3B%20il%20s%92agit%20d%92un%20super%20trou%20noir%20occupant%20le%20c%9Cur%20du%20quasar%20OJ287%2C%20%E0%203%2C5%20milliards%20d%92ann%E9es-lumi%E8re%20de%20nous.%20Il%20se%20paye%20le%20luxe%20d%92avoir%20un%20partenaire%20plus%20petit%20%28toutes%20proportions%20gard%E9es%21%29%3A%20un%20trou%20noir%20de%20100%20millions%20de%20masses%20solaires%2C%20qui%20orbite%20autour%20de%20lui%20en%20douze%20ann%E9es%3B%20c%92est%20d%92ailleurs%20l%92analyse%20de%20l%92orbite%20du%20petit%20qui%20permet%20d%92estimer%20la%20masse%20du%20gros.%3C%2Fi%3E%22%3Cbr%3E%3Cbr%3ENon%20de%20non%2C%20on%20est%20pas%20au%20bout%20de%20nos%20surprises%20avec%20ces%20satan%E9s%20trous%20noirs...
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Un record de masse pour un trou noir : 18 milliards de masses solaires... - par Jean-Pierre Luminet dans la catégorie "Science & Technologie" |
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"Quand les trous noirs éclairent la théorie d'Einstein", une conférence de Pierre Binétruy dans la catégorie "Science & Technologie" |
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"Les trous noirs et la forme de l'espace" par Jean-Pierre Luminet - 5 Juillet 2000 dans la catégorie "Science & Technologie" |
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"Voyage dans l'espace-temps - Les trous noirs" dans la catégorie "Science & Technologie" |
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Une simulation du dîner programmé du trou noir central de notre galaxie dans la catégorie "Science & Technologie" |
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Un bref aperçu des trous noirs par Jean-Luc Robert-Esil dans la catégorie "Science & Technologie" |
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"La chasse aux trous noirs supermassifs" par Andrea Ghez - TEDx dans la catégorie "Science & Technologie" |
Une%20courte%20vid%E9o%20didactique%20int%E9ressante.
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"Qu'est-ce qu'une année et le trou noir galactique super massif" dans la catégorie "Science & Technologie" |
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"Les trous noirs, objets mathématiques et réels" par Thierry Foglizzo dans la catégorie "Science & Technologie" |
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Une animation de la Nasa, réalisée à partir des données du satellite Swift, montrant un trou noir dévorant une étoile dans la catégorie "Science & Technologie" |
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"Le destin de l'Univers : trous noirs et énergie sombre" par Jean-Pierre Luminet dans la catégorie "Science & Technologie" |
Une%20vid%E9o%20sur%20les%20trous%20noirs%20et%20la%20bataille%20conceptuelle%20%E0%20leur%20sujet.
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"À l'approche d'un trou noir" dans la catégorie "Science & Technologie" |
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"Les mystères du cosmos - Plongée dans les trous noirs" dans la catégorie "Science & Technologie" |
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"Voyage au cœur d'un trou noir" par Alain Riazuelo dans la catégorie "Science & Technologie" |
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"Pleins feux sur les trous noirs" par Éric Gourgoulhon dans la catégorie "Science & Technologie" |
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"Les mystères du cosmos - Les trous noirs" dans la catégorie "Science & Technologie" |
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"Les plus grands trous noirs dans l'univers" - Version 1 dans la catégorie "Science & Technologie" |
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"Qu'est-ce qu'un trou noir ?" dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECette%20vid%E9o%20est%26nbsp%3Bun%20ensemble%20de%202%20documentaires%2C%20concat%E9n%E9s%20en%20un%20seul%20morceau%2C%0D%0Apr%E9sent%E9s%20dans%20le%20cadre%20d%27une%20soir%E9e%20%26quot%3B%3Ci%3EThema%3C%2Fi%3E%26quot%3B%20de%20la%20cha%EEne%0D%0Afranco-allemande%20%26quot%3B%3Ci%3EArte%3C%2Fi%3E%26quot%3B%20sur%20le%20sujet%20des%20cons%E9quences%0D%0A%E9pouvantables%2C%20et%20parfois%20largement%20m%E9connues%2C%20de%20l%27extraction%20du%20p%E9trole%20%3A%3C%2Fp%3E%0D%0A%3Cul%3E%0D%0A%20%20%3Cli%3E%0D%0A%20%20%20%20%3Cp%20align%3D%22justify%22%3E%26quot%3B%3Ci%3EBP%20en%20eaux%20troubles%3C%2Fi%3E%26quot%3B%20%3A%20r%E9alis%E9%20en%0D%0A%20%20%20%202011%20par%20James%20Brabazon%20et%20Greg%20Palast.%3C%2Fli%3E%0D%0A%20%20%3Cli%3E%0D%0A%20%20%20%20%3Cp%20align%3D%22justify%22%3E%26quot%3B%3Ci%3ECarbonis%E9s%20%3A%20Les%20p%E9troliers%20ennemis%20du%20climat%3C%2Fi%3E%26quot%3B%0D%0A%20%20%20%20%3A%20r%E9alis%E9%20en%202011%20par%20Inge%20Altemeier.%3C%2Fli%3E%0D%0A%3C%2Ful%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cfont%20size%3D%225%22%3E%3Cb%3E%3Cu%3E%26quot%3B%3Ci%3EBP%20en%20eaux%20troubles%3C%2Fi%3E%26quot%3B%20%3A%0D%0Asynopsis%20%3A%3C%2Fu%3E%3C%2Fb%3E%3C%2Ffont%3E%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%20style%3D%22margin-left%3A%2020%22%3ELe%2020%20avril%202010%2C%20le%20complexe%20p%E9trolier%20%93Deepwater%20Horizon%94%20est%20d%E9truit%20par%20une%20explosion.%20La%20mar%E9e%20noire%20qui%20en%20r%E9sulte%20est%20consid%E9r%E9e%20comme%20l%92une%20des%20pires%20catastrophes%20environnementales%20de%20l%92histoire.%20Enqu%EAte%0D%0Asur%20la%20multinationale%20BP.%20D%92apr%E8s%20les%20conclusions%20du%20Congr%E8s%20am%E9ricain%2C%20l%92un%20des%20principaux%20responsables%20de%20ce%20d%E9sastre%20%E9cologique%20est%20la%20multinationale%20BP.%20Les%20d%E9g%E2ts%20massifs%20sur%20l%92%E9cosyst%E8me%20de%20la%20r%E9gion%2C%20que%0D%0Al%92on%20impute%20au%20groupe%2C%20sont%20dus%2C%20pour%20la%20plupart%2C%20%E0%20de%20simples%20n%E9gligences%2C%20ou%20au%20non-respect%20des%20r%E8gles%20de%20s%E9curit%E9%20%E9l%E9mentaires.%20Greg%20Palast%2C%20l%92un%20des%20chefs%20de%20file%20du%20journalisme%20d%92investigation%20am%E9ricain%2C%0D%0Aenqu%EAte%20depuis%20vingt%20ans%20sur%20les%20pratiques%20du%20g%E9ant%20p%E9trolier.%20Ses%20p%E9riples%20l%92ont%20men%E9%20du%20golfe%20du%20Mexique%20aux%20nouveaux%20territoires%20convoit%E9s%20par%20BP%20dans%20la%20partie%20arctique%20de%20l%92Alaska%2C%20puis%20vers%20l%92une%20des%0D%0Ar%E9gions%20les%20plus%20pollu%E9es%20au%20monde%2C%20celle%20des%20champs%20p%E9trolif%E8res%20d%92Azerba%EFdjan.%20Son%20enqu%EAte%20prouve%20que%20le%20groupe%20a%20parfois%20us%E9%20de%20m%E9thodes%20pour%20le%20moins%20douteuses%20afin%20de%20s%92arroger%20des%20contrats%20juteux.%20Le%0D%0Aprochain%20est%20d%E9j%E0%20scell%E9%20%3A%20jouissant%20de%20la%20b%E9n%E9diction%20de%20leurs%20%C9tats%20respectifs%2C%20BP%20et%20l%92entreprise%20publique%20russe%20Rosneft%20ont%20sign%E9%20un%20accord%20permettant%20l%92exploitation%20de%20puits%20de%20forage%20situ%E9s%20en%20Russie%0D%0Aarctique.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AD%E9j%E0%20un%20an%20apr%E8s%20la%20catastrophe%20de%20la%20plateforme%20Deepwater%20Horizon%20et%20le%20d%E9versement%20de%20650%20000%20m%E8tres%20cubes%20de%20p%E9trole%20dans%20le%20Golfe%20du%20Mexique%2C%20BP%20crie%20victoire%20en%20d%E9clarant%20que%20le%20p%E9trole%20a%20pratiquement%0D%0Adisparu.%20Mais%20la%20r%E9alit%E9%20semble%20diff%E9rente%20de%20la%20affirmation%20de%20BP.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADepuis%2020%20ans%2C%20l%92enqu%EAteur%20Greg%20Palast%20est%20sur%20la%20piste%20de%20BP%20et%20a%20trouv%E9%20que%20la%20catastrophe%20dans%20le%20Golfe%20du%20Mexique%20n%27est%20pas%20le%20seul%20pour%20lequel%20BP%20porte%20la%20responsabilit%E9.%20Globalement%2C%20BP%20est%20impliqu%E9%20dans%0D%0Ales%20crimes%20environnementaux.%20Depuis%20le%20Golfe%20du%20Mexique%2C%20Greg%20Palast%20s%92envole%20pour%20l%92oc%E9an%20arctique%20pour%20d%E9couvrir%20que%20BP%20y%20a%20d%E9vers%E9%20750%20000%20litres%20de%20p%E9trole.%20Le%20probl%E8me%20%3F%20BP%20n%92avait%20pas%20test%E9%20l%92%E9tat%20du%0D%0Agazoduc%20depuis%20huit%20ans.%20La%20raison%20%3F%20Un%20avocat%20de%20la%20partie%20adverse%20explique%20%3A%20%AB%20BP%20r%E9duit%20ses%20co%FBts%2C%20avec%20des%20cons%E9quences%20d%E9sastreuses.%20%BB%20Dans%20l%92ombre%2C%20l%92un%20de%20ceux%20qui%20ont%20programm%E9%20l%92%E9quipement%20de%20test%20des%0D%0Apipelines%20utilis%E9%20par%20les%20compagnies%2C%20le%20PIG%2C%20explique%20que%20tester%201%2C5%20km%20de%20gazoduc%20peut%20co%FBter%20jusqu%92%E0%20un%20million%20de%20dollars.%20BP%20a%20peut-%EAtre%20%E9conomis%E9%20des%20millions%20de%20dollars%20sur%20le%20test%20de%20ses%20gazoducs%2C%20mais%0D%0Aelle%20a%20ainsi%20empoisonn%E9%20la%20derni%E8re%20r%E9gion%20du%20globe%20encore%20intacte.%26nbsp%3B%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AGreg%20Palast%20qui%2C%20il%20y%20a%20quelques%20ann%E9es%2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Évaluée
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"La malédiction de l'or noir" : "BP en eaux troubles" et "Carbonisés : Les pétroliers ennemis du climat" dans la catégorie "Économie, Commerce, Entreprises, et Travailleurs" |
L%27un%20des%20meilleurs%20documentaires%20sur%20les%20trous%20noirs%2C%20et%20m%EAme%20un%20peu%20effrayant.%20%C0%20voir%20%21%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20obtenir%20la%20liste%20de%20toutes%20les%20vid%E9os%20sur%20le%20th%E8me%20des%20trous%20noirs%2C%20%0D%0Adisponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrou%2520noir%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E%20puis%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrous%2520noirs%26mode%3Dliste%22%3E%0D%0A%5Bl%E0%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Les clés de l'Univers - Épisode 2 - Trous noirs" dans la catégorie "Science & Technologie" |
Cette%20vid%E9o%2C%20en%205%20parties%2C%20est%20un%20excellent%20documentaire%20pour%20mieux%20comprendre%20les%20trous%20noirs%2C%20comment%20on%20les%20a%20d%E9couvert%2C%20et%20leurs%20principales%20caract%E9ristiques.%20Passionnant%20%21%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20obtenir%20la%20liste%20de%20toutes%20les%20vid%E9os%20sur%20le%20th%E8me%20des%20trous%20noirs%2C%20%0D%0Adisponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrou%2520noir%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E%20puis%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrous%2520noirs%26mode%3Dliste%22%3E%0D%0A%5Bl%E0%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Au delà des trous noirs" dans la catégorie "Science & Technologie" |
Cette%20vid%E9o%20est%20un%20documentaire%20scientifique%20du%20%26quot%3B%3Ci%3ENational%20Geographic%3C%2Fi%3E%26quot%3B%0D%0Asur%20les%20%E9nigmatiques%20trous%20noirs%2C%20ces%20v%E9ritables%20monstres%20des%20galaxies.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0APlusieurs%20%E9quipes%2C%20l%27une%20am%E9ricaine%2C%20l%27autre%20allemande%2C%20s%27affrontent%20pour%0D%0Ad%E9terminer%20si%20le%20centre%20de%20notre%20galaxie%2C%20la%20%26quot%3B%3Ci%3EVoie%20Lact%E9e%3C%2Fi%3E%26quot%3B%2C%0D%0Aest%20un%20trou%20noir.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AAu%20travers%20de%20des%20exp%E9riences%20qu%27ils%20m%E8nent%2C%20le%20documentaire%20nous%20fait%0D%0Ad%E9couvrir%20l%27univers%20des%20trous%20noirs%2C%20et%20notamment%20les%20diff%E9rents%20ph%E9nom%E8nes%0D%0Aet%20l%27impact%20incroyables%20qu%27ils%20g%E9n%E8rent.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AEt%20pour%20la%20premi%E8re%20fois%2C%20des%20scientifiques%20vont%20parvenir%20%E0%20%26quot%3Bvoir%26quot%3B%20ce%20qu%27il%20y%20a%20%E0%20l%27int%E9rieur%20d%27un%20trou%0D%0Anoir%2C%20gr%E2ce%20%E0%20une%20simulation%20informatique%20visuelle%20mettant%20en%20oeuvre%20les%0D%0A%E9quations%20d%27Einstein.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0APlus%20%E9tonnant%20encore%20%3A%20plus%20l%27on%20se%20rapproche%20du%20centre%20de%20la%20galaxie%2C%20plus%20on%0D%0Atrouve%20de%20trous%20noirs...%3Cbr%3E%0D%0AEt%20sur%20les%20125%20milliards%20de%20galaxies%20qui%20composent%20l%27Univers%20visibles%2C%20plus%20d%27un%0D%0Amillion%20ont%20d%E9j%E0%20%E9t%E9%20%26quot%3Banalys%E9es%26quot%3B.%20Et%20vous%20savez%20quoi%20%3F%20La%20plus%0D%0Avaste%20majorit%E9%20d%27entre%20elles%20portent%20la%20marque%20d%27un%20trou%20noir%20hyper-massif%20en%0D%0Aleur%20centre...%20De%20l%E0%20%E0%20penser%20que%20toutes%20les%20galaxies%20abritent%20en%20leur%20centre%0D%0Aun%20trou%20noir%2C%20il%20n%27y%20a%20qu%27un%20pas.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%26quot%3B%3Ci%3EUn%20trou%20noir%20est%20un%20objet%20astrophysique%20comme%20un%20autre.%20Il%20se%20caract%E9rise%20par%20le%20fait%20qu%92il%20est%20tr%E8s%20difficile%20%E0%20observer%20directement%20%28voir%20ci-dessous%29%2C%20et%20que%20sa%20r%E9gion%20centrale%20ne%20peut%20%EAtre%20d%E9crite%20de%20fa%E7on%20satisfaisante%20par%20les%20th%E9ories%20physiques%20en%20leur%20%E9tat%20du%20d%E9but%20du%20XXIe%20si%E8cle%2C%20car%20elle%20abrite%20une%20singularit%E9%20gravitationnelle.%20Cette%20derni%E8re%20ne%20peut%20%EAtre%20d%E9crite%20que%20dans%20le%20cadre%20d%92une%20th%E9orie%20de%20la%20gravitation%20quantique%2C%20manquante%20%E0%20ce%20jour.%20Par%20contre%2C%20on%20sait%20parfaitement%20d%E9crire%20les%20conditions%20physiques%20qui%20r%E8gnent%20dans%20son%20voisinage%20imm%E9diat%2C%20de%20m%EAme%20que%20son%20influence%20sur%20son%20environnement%2C%20ce%20qui%20permet%20de%20les%20d%E9tecter%20par%20diverses%20m%E9thodes%20indirectes.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0APar%20ailleurs%2C%20les%20trous%20noirs%20sont%20%E9tonnants%20en%20ce%20qu%92ils%20sont%20d%E9crits%20par%20un%20tr%E8s%20petit%20nombre%20de%20param%E8tres.%20En%20effet%2C%20leur%20description%2C%20dans%20l%92univers%20dans%20lequel%20nous%20vivons%2C%20ne%20d%E9pend%20que%20de%20trois%20param%E8tres%20%3A%20la%20masse%2C%20la%20charge%20%E9lectrique%20et%20le%20moment%20cin%E9tique.%20Tous%20les%20autres%20param%E8tres%20du%20trou%20noir%20%28par%20exemple%20sa%20taille%20ou%20sa%20forme%29%20sont%20fix%E9s%20par%20ceux-l%E0.%20Par%20comparaison%2C%20la%20description%20d%92une%20plan%E8te%20fait%20intervenir%20des%20centaines%20de%20param%E8tres%20%28composition%20chimique%2C%20diff%E9renciation%20de%20ses%20%E9l%E9ments%2C%20convection%2C%20atmosph%E8re%2C%20etc.%29.%20La%20raison%20pour%20laquelle%20un%20trou%20noir%20n%92est%20d%E9crit%20que%20par%20ces%20trois%20param%E8tres%20est%20connue%20depuis%201967%20%3A%0D%0Ac%92est%20le%20th%E9or%E8me%20de%20calvitie%20d%E9montr%E9%20par%20Werner%20Israel.%20Celui-ci%20explique%20que%20les%20seules%20interactions%20fondamentales%20%E0%20longue%20port%E9e%20%E9tant%20la%20gravitation%20et%20l%92%E9lectromagn%E9tisme%2C%20les%20seules%20propri%E9t%E9s%20mesurables%20des%20trous%20noirs%20sont%20donn%E9es%20par%20les%20param%E8tres%20d%E9crivant%20ces%20interactions%2C%20%E0%20savoir%20la%20masse%2C%20le%20moment%20cin%E9tique%20et%20la%20charge%20%E9lectrique.%3Cbr%3E%0D%0APour%20un%20trou%20noir%2C%20la%20masse%20et%20la%20charge%20%E9lectrique%20sont%20des%20propri%E9t%E9s%20habituelles%20que%20d%E9crit%20la%20physique%20classique%20%28c%27est-%E0-dire%20non-relativiste%29%20%3A%20le%20trou%20noir%20poss%E8de%20un%20champ%20gravitationnel%20proportionnel%20%E0%20sa%20masse%20et%20un%20champ%20%E9lectrique%20proportionnel%20%E0%20sa%20charge.%20L%27influence%20du%20moment%20cin%E9tique%20est%20par%20contre%20sp%E9cifique%20%E0%20la%20relativit%E9%20g%E9n%E9rale.%20Celle-l%E0%20stipule%20en%20effet%20qu%27un%20corps%20en%20rotation%20va%20avoir%20tendance%20%E0%20%AB%20entra%EEner%20%BB%20l%27espace-temps%20dans%20son%20voisinage.%3C%2F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Must
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"Monstres de la galaxie" : les trous noirs dans la catégorie "Science & Technologie" |
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"L'univers de Stephen Hawking : Au delà des trous noirs" dans la catégorie "Science & Technologie" |
Cette%20vid%E9o%20est%20un%20documentaire%20r%E9alis%E9%20par%20un%20amateur%20sur%20les%20plus%20gros%20trous%20noirs%20de%20l%27Univers.%3Cbr%3E%3Cbr%3EOn%20ne%20les%20a%20jamais%20directement%20vus%2C%20pourtant%20nous%20savons%20qu%92ils%20sont%20l%E0%2C%20r%F4dant%20au%20milieu%20de%20denses%20amas%20d%92%E9toiles%2C%20ou%20errant%20dans%20les%20n%E9buleuses%20de%20la%20galaxie%2C%20o%F9%20ils%20chassent%20les%20%E9toiles%2C%20ou%20avalent%20des%20plan%E8tes%20enti%E8res%20%3A%20ce%20sont%20les%20plus%20gros%20trous%20noirs%20de%20l%27Univers.%3Cbr%3E%3Cbr%3EUn%20bon%20petit%20documentaire%20bien%20fait%20sur%20ces%20%E9nignatiques%20et%20fascinants%20objets%20que%20sont%20les%20trous%20noirs.%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20obtenir%20la%20liste%20de%20toutes%20les%20vid%E9os%20sur%20le%20th%E8me%20des%20trous%20noirs%2C%20%0D%0Adisponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrou%2520noir%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E%20puis%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrous%2520noirs%26mode%3Dliste%22%3E%0D%0A%5Bl%E0%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Les plus gros trous noirs de l'Univers" dans la catégorie "Science & Technologie" |
Voici%20la%20vid%E9o%20d%27un%20court%20m%E9trage%20absolument%20r%E9ussi%20%21%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20obtenir%20la%20liste%20de%20toutes%20les%20vid%E9os%20sur%20le%20th%E8me%20des%20trous%20noirs%2C%20%0D%0Adisponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrou%2520noir%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E%20puis%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dtrous%2520noirs%26mode%3Dliste%22%3E%0D%0A%5Bl%E0%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Le trou noir" dans la catégorie "Curiosités, Arts, Humour, et Divertissement" |