Craquer une Allumette sur Jupiter — Exploserait-Elle Pour Autant ? - video Dailymotion

Sympa

Avez-vous déjà imaginé ce qui se passerait si vous essayiez d'allumer une allumette sur Jupiter ? 🌩️ Eh bien, voici un fait époustouflant : l'atmosphère de Jupiter est remplie d'hydrogène, la même substance utilisée par les fusées comme carburant ! Mais avant d'imaginer une énorme boule de feu, il y a une condition : Jupiter a presque pas d'oxygène. Ainsi, sans oxygène, votre allumette ne produirait même pas d'étincelle — elle s'éteindrait instantanément ! Rejoignez-nous alors que nous plongeons dans ce « et si » enflammé et explorons ce qui se passerait vraiment si le feu rencontrait les cieux orageux de Jupiter. 🔥🌪️  Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com   Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/  Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  Si tu en veux encore plus, fais un tour ici:  http://sympa-sympa.com

Transcript

00:00Hey, what would you say to crack a gigantic dynamite on Jupiter, the biggest reservoir of explosive gas of our solar system?

00:08We find the methane, reputed to be able to survive.

00:12The bovins are the specialists.

00:14We also find the hydrogen metal metal, which,

00:16which is an extreme pressure, becomes a formidable carburant.

00:20However, when we try to get a fire,

00:23nothing happens, no breath is expected.

00:26Wait, why then? And could we do it if we really wanted to explode Jupiter?

00:32Jupiter is the colossus of our solar system,

00:35the most important planet in our size.

00:37Its diameter surpassed 11 times that of our world.

00:40Imagine the Earth reduced to a simple piece of 5 cents.

00:43Jupiter would then be comparable to a ballon of basket.

00:475th planet after Mars,

00:49it weighs more than 300 times our globe.

00:51And even 2 times the mass reunions of all other planets.

00:54This measure in a real aimant satellite.

00:5795 lunes connues gravitent autour d'elle.

01:00The most famous are the galiléenne

01:03Io, Europe, Ganymède et Callisto,

01:06discovered by Galilée in 1610.

01:09Jupiter also has also an annealer,

01:11which is much more majestic than those of Saturn.

01:13They are frailes structures,

01:15composed of ice rather than glass,

01:17so discreetes that they are almost almost no light,

01:20and so invisibles to the eye.

01:22In addition to Jupiter,

01:24Jupiter is the most short of the solar system,

01:26at least 10 hours,

01:27while she met close to 12 years of terrestrial

01:29to accomplish her orbit around the Sun.

01:31However,

01:32the essence resides in its nature even.

01:34According to our planet,

01:36Jupiter is not solid.

01:37She belongs, with Saturn,

01:39to the category of gas giants,

01:41formed mainly of gas.

01:43The gas giants are above all

01:46produced hydrogen and helium,

01:48the same elements that form the stars.

01:50Jupiter and Saturne

01:51referm also a small proportion

01:53of elements more lourds.

01:54This does not mean

01:55that the planet

01:56reduce to a simple bubble of gas.

01:58The internal pressure

01:59are the same

02:00that the molecules

02:01cannot preserve their habit of habit.

02:03The external couches

02:04are made

02:05of hydrogen moleculaire

02:06compressible.

02:07Plus on descend,

02:08plus this one

02:09appears to an ocean

02:10of hydrogen metallic liquid,

02:11before reaching,

02:12in profondeur,

02:13a probable noyau

02:14probably rocheux.

02:15From the outside,

02:16all this is manifested

02:17by the waves

02:18in the atmosphere.

02:19Jupiter also shows

02:21its bands

02:22and its tourbillons,

02:23semblables

02:24to the vasts motifs.

02:25In truth,

02:26it is a matter of

02:27the glaciers

02:28of ammonium and water,

02:29brought by

02:30a mixture of hydrogen

02:31and helium.

02:32Her famous

02:33red red red red red

02:34is nothing

02:35gigantic

02:36since several centuries.

02:38This tourbillons

02:39exceed the size

02:40entire

02:41and appear

02:42two times faster

02:43than the most violent

02:44that our planet

02:45can produce.

02:47So,

02:48the obstacle

02:49that comes out

02:50when we try to

02:51to be able

02:52to be able

02:53to keep you in this

02:54atmosphere

02:55full of surface

02:56and ignoring

02:57the gravity titanesque

02:58and the tempest

02:59of the sea,

03:00the combustion

03:01requires oxygen,

03:02an ingredient

03:03totally absent

03:04of the air

03:05without oxygen,

03:06no flame.

03:07Supposed

03:08to be a magic

03:09capable

03:10of producing

03:11the oxygen

03:12necessary.

03:13It should work,

03:14not?

03:15The mass

03:16of Jupiter

03:17is like

03:18a huge amount

03:19of oxygen

03:20probably

03:21superior to

03:22what the whole

03:23solar system

03:24has.

03:25You may have heard

03:26say that Jupiter

03:27protects us

03:28with a huge

03:29gravity

03:30that

03:31could

03:32easily

03:33hit the

03:34planet.

03:35The planet

03:36has

03:37over 30

03:38and 100

03:40collisions each year.

03:41even the most spectacular

03:44collision

03:45that has been

03:46never caused

03:47an explosion.

03:48This event

03:49was produced

03:50with the

03:51Shoemaker-Levy 9

03:52in 1994.

03:53It was

03:54fragmenting

03:55two years

03:56more than

03:57at least

03:58one kilometer

03:59wide.

04:00Then,

04:01in 1994,

04:02it was too close

04:03the impact

04:04was of a terrible

04:05intensity.

04:06During six

04:07days,

04:08twenty-one fragments

04:09plongèrent

04:10in the atmosphere

04:11of Jupiter

04:12at a great speed.

04:13The high atmosphere

04:14was then

04:15to about 29

04:16400 degrees.

04:17Like a ricochet

04:18in an étang,

04:19the impacts

04:20engendrèrent

04:21immense panache.

04:22They

04:23were at more

04:24three thousand kilometers

04:25on top of Jupiter.

04:26Of vastes

04:27traînées

04:28sombres

04:29of debris

04:30in the atmosphere

04:31for several months

04:32to dissipate

04:33a little bit

04:34from the

04:35powerful winds

04:36of the planet.

04:37This impact

04:38allowed us to learn

04:39a lot of things

04:40on Jupiter.

04:41The sombres

04:42of the collisions

04:43have used

04:44markers

04:45revealing

04:46the existence

04:47of the altitude

04:48in the

04:49stratosphere

04:50of its

04:51aurora.

04:52Finally,

04:53we have obtained

04:54some precious indices

04:55on its

04:56atmosphere.

04:57The

04:58of

05:00NASA

05:01to examine

05:02more seriously

05:03the risk

05:04of such impacts

05:05on Earth.

05:06We help

05:07to better understand

05:08the comet

05:09and the collisions

05:10cosmos.

05:11Saturn,

05:12the sixth planet

05:13from the

05:14Earth,

05:15is also

05:16the category

05:17of gas.

05:18Like Jupiter,

05:19Jupiter,

05:20it is not

05:21a simple

05:22gas.

05:23It is

05:24mainly

05:25made

05:26of hydrogen

05:27surrounded by

05:28rocks.

05:29It is remarkable,

05:30it is

05:31quite light

05:32that Jupiter

05:33is

05:34about 95 times

05:35the mass

05:36terrestrial.

05:37Saturn

05:38is

05:39yellow,

05:40red,

05:41red,

05:42red,

05:43red,

05:44red,

05:45red,

05:46red,

05:47red,

05:48red,

05:49red,

05:50red,

05:51red,

05:52red,

05:53red,

05:54red,

05:55red,

05:56潤urt

05:57shirt

06:04red,

06:05red,

06:06red,

06:07red,

06:08red,

06:09red,

06:10red,

06:12the

06:14green,

06:15that

06:17surrounded

06:18ever

06:19future

06:20Cependant, the other research have shown that they form a distinct category, the giants of glass.

06:26It is not for such an immense glass that are derived from the space.

06:30They are especially made of substances more lourdes, eau, ammonium and methane,

06:35which, in certain conditions, can be solidified in the surface of their atmosphere.

06:41This composition is distinguished from the giants of gas, even if they share with them several traits common,

06:47such as effraying, our solar system is not the only one to abriter of such a planet.

06:54There are also giants of gas extrasolaires, classed according to their properties of their atmosphere,

07:00allant from clouds of ammonium to clouds totally full of clouds.

07:05Among them figure the Jupiter-chauds, a distinct category group of very chauds,

07:12semblables à Jupiter, ce sont des géantes gazeuses ayant migré trop près de leur étoile.

07:18Ainsi, KLT-9b ou Kepler-7b orbitent mondes si près de leur Soleil qu'une année entière n'y dure que 18 heures.

07:29Nous avons récemment identifié une petite représentante de cette famille de Jupiter-chauds.

07:33Cette planète, nommée EIP-67522b, n'a que quelques millions d'années.

07:40Cela peut paraître considérable, mais à l'échelle cosmique, ce n'est presque rien.

07:44Notre propre Lune a environ 4 milliards et demi d'années.

07:49Cette découverte bouscule les idées établies.

07:52La plupart des Jupiter-chauds connus ont bien plus d'un milliard d'années.

07:56Nous ignorons encore comment celui-ci a pu se former aussi rapidement.

07:59Plus fascinant encore, la question de leur proximité extrême avec leur étoile.

08:05Plusieurs théories s'affrontent.

08:08Certains supposent qu'ils se sont formés sur place, malgré des températures suffocantes.

08:13D'autres estiment qu'ils auraient à migrer depuis des zones plus lointaines de l'espace.

08:19Ainsi, lorsque des matériaux glacés s'unirent pour former une planète errante dérivant dans l'espace,

08:24celle-ci finit par croiser une étoile dont la gravité l'attira et la fixa en orbite.

08:30Cela aurait pu se produire alors que l'astre était encore enveloppé d'un cocon de gaz et de poussière, ou bien plus tard.

08:36Les chercheurs devront poursuivre leurs investigations pour en préciser l'origine.

08:41Il existe également quelques curiosités singulières.

08:44Les naines gazeuses, que l'on nomme aussi mini-Neptune.

08:48Ce sont des versions réduites de géantes gazeuses, dotées d'un noyau rocheux, enveloppé d'épais manteaux, d'hydrogène et d'hélium.

08:56Elles portent ce nom parce que, bien qu'un peu plus petites que Neptune, elles lui ressemblent à bien des égards.

09:04Leur taille se situe entre deux et quatre fois celle de la Terre.

09:07En général, il s'agit de mondes à l'atmosphère dense, dominées par l'hydrogène et l'hélium,

09:14avec parfois des couches de glace, de roche ou même des océans liquides sous la surface.

09:19Si l'une d'elles manquait de gaz, elle serait plutôt considérée comme une planète océan.

09:25Leur existence reste difficile à expliquer et contredit certaines normes scientifiques établies.

09:30A l'instar des Jupiters chauds, elles nécessitent encore de nombreuses recherches.

Craquer une Allumette sur Jupiter — Exploserait-Elle Pour Autant ?

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