Pratique du Shadowing: How Big is The Universe? - Apprendre l'anglais à l'oral avec la vidéo
Création de la leçon...
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Earth our home planet a tiny blue dot floating in
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the immense Cosmic ocean here resides everyone you ever knew every human who ever lived every story that was ever told it's where our journey begins but as we zoom out beyond our atmosphere past the
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moon Beyond The Familiar planet and the sun we embark on an Epic Quest a quest to grasp the true scale of our universe as we leave Earth's embrace the first marker on our Cosmic journey is the moon
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about 384,000 km away a distance so vast that if you were to drive a car at a constant speed of 100 km per hour it would take you over 160 days to reach it and from this lunar Vantage Point Earth
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appears as a a fragile sphere of Blues and greens cradled in the black void of space a sight that puts our existence into a humbling perspective this is Earth as seen from the Moon as we continue
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our outward Journey the next Milestone is the sun lying approximately one astronomical unit away from Earth this unit equivalent to about 150 million kilm is the standard measuring stick for
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distances in our solar system imagine this light traveling at an astounding speed of 300,000 km/s takes about 8 minutes and 20 seconds to Journey from the Sun to Earth if you were to travel this
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distance in a commercial jet flying at 900 km hour it would take you about 19 years this immense distance is a stark reminder of the vastness of space even within our own solar system the Sun a
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fiery Behemoth provides life- sustaining energy to our planet from this incredible distance venturing beyond our home planet and its solar companion the sun we set our sites on Mars our enigmatic red
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neighbor Mars at its closest approach to Earth is about 54.6 million kilm away however this distance can stretch up to 401 million km when the two planets are on opposite sides of the sun
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to put that in perspective traveling to Mars at the speed of a commercial jet would take upwards of 50 years this vast expanse of space between Earth and Mars has been a significant challenge
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for space exploration The Rovers and probes we've sent to the red planet embark on a journey that is not just far but fraught with complexities due to the constantly changing distances and orbital
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Dynamics as we journey to the outermost reaches of our solar system we encounter Neptune the distant ice giant lying roughly 4.5 billion kilm from Earth Neptune marks the edge of our solar
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neighborhood sunlight racing across the vacuum of space takes about 4 hours and 15 minutes to reach Neptune from the Sun this staggering distance showcases the enormity of our solar
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system launched in 1977 the Voyager One space probe represents Humanity's insatiable curiosity and our desire to explore Beyond known bound boundaries as of now Voyager 1 has traveled for
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over four decades covering a staggering distance of more than 22 billion kilometers from Earth it's the farthest human-made object from our planet a silent Wanderer in the cosmic sea in 1990 at
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the suggestion of the renowned astronomer Carl San Voyager 1 turned its camera back towards Earth for one final photograph this resulted in the iconic pale blue dot image and at a distance of about 6
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billion kilm from Earth our planet appeared as a tiny faint dot in the vastness of space Sean poetically reflected on this image emphasizing our responsibility to cherish and preserve our
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only home a small Speck in the immense Universe At the very fringes of our solar system lies the ort Cloud a vast theoretical sphere of icy objects this distant cloud is thought to extend up to a
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staggering 100,000 astronomical units from the Sun that's about 1.9 light years a distance so immense that it's on the cusp of interstellar space scientists determine the boundary of
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interstellar space known as the heliopause where the sun's solar wind is stopped by the interstellar medium this is where the influence of our sun ceases and the vast realm of interstellar
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space Begins the or Cloud represents the final frontier of our solar system a boundary Zone where the sun's influence wanes and the cosmic journey into the Galaxy truly begins as we venture
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beyond the confines of our solar system our next point of interest is Alpha centor the closest star system to our sun located about 41.3 trillion km away this distance is equivalent to over 276,000
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astronomical units at such colossal distances the AU a measure so convenient within our solar system begins to lose its practicality hence astronomers use the Lightyear the distance light travels in
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one year for Interstellar measurements Alpa centu is about 4.4 light years away from us considering our current space travel technology a journey to Alpha centor is almost unfathomable
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for instance the Voyager spacecraft traveling at about 17 km/ second would take over 70,000 years to reach this neighboring star system this immense distance underscores the vastness of
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space that separates the stars and highlights the challenges of interstellar travel our journey now takes us to the Grand scale of our home galaxy The Milky Way spanning about 100,000 light years
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in diameter this vast spiral galaxy is home to hundreds of billions of stars each potentially hosting their own planetary systems within this immense structure there's a a tiny sphere known
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as the human radio bubble extending about a 100 light years from Earth this bubble represents the farthest extent of human influence in the cosmos the reach of our radio and television broadcasts
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into space beyond this bubble it's as if Humanity never existed any civilizations residing in the vast majority of our galaxy would be oblivious to our presence given that our signals haven't
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reached them yet the scale of the Milky Way is so vast that our entire recorded history is but a whisper in the Cosmic Wind undetectable Beyond this small bubble as we leave the Milky Way we
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enter the vast almost incomprehensible realm of Intergalactic space here galaxies float in the cosmic ocean separated by mindboggling distances our galaxy is part of a small Cosmic neighborhood
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known as the local group a cluster of more than 50 galaxies spread across approximately 10 million light years the local group is a diverse assembly including not just spiral galaxies like the Milky
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Way and Andromeda but also a multitude of smaller dwarf galaxies the distances here are so vast that light from one end of the local group to the other would take 10 million years to Traverse this scale
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dwarfs anything within our own Galaxy underscoring the enormity of the universe Intergalactic space is a silent expanse a vast Wilderness between the islands of Galactic light in this immense void
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our galaxy home to our entire history is just a tiny Speck among many a single story in the grand Cosmic Library as we extend our Cosmic gaze beyond the local group we encounter the Colossal
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Virgo supercluster an immense collection of Galaxy groups and clusters including our own local group encompassing a region of space about 110 million light years in diameter or 33 megap parex the
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Virgo super cluster is a Titanic structure in the universe containing thousands of galaxies from at least 100 Galaxy groups and clusters each with their own Myriad stars and planets as we journey
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outward from the Virgo supercluster we arrive at an even more staggering Cosmic structure the lanaka supercluster this immense Congregation of galaxies which includes the Vergo supercluster
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and extends over 500 million light years is our Galactic home on a grand scale lakia meaning immense Heaven in Hawaiian truly lives up to its name containing the mass of 100 million
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billion Suns lakia is a gravitational Masterpiece with Galaxy clusters superclusters and countless celestial bodies Bound in a cosmic web of Attraction and motion at the heart of lanaka
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Lies the great attractor a mysterious region of space that exerts a massive gravitational pull on the galaxies within this super cluster in this vast expanse our Milky Way the entire
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local group and even the Virgo supercluster are just tiny components of this gigantic structure lanak Kia provides a profound context for our existence in this immense supercluster we are
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part of something far greater and more Majestic than we can fully comprehend as we reach the boundaries of our Cosmic exploration we encounter the limits of the observable universe an Aston
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astronomical Marvel stretching about 93 billion light years in diameter this begs a fascinating question if the universe is only 13.8 billion years old how can it be so vast the answer lies
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in the nature of cosmic expansion the universe has been expanding since the Big Bang stretching space and increasing distances between celestial bodies but what lies beyond the observable universe this
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remains one of the greatest mysteries of cosm ology some regions of space are expanding away from us faster than the speed of light placing them forever out of our view consequently the
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true size of the entire universe remains unknown and potentially infinite the observable universe vast as it is might just be a tiny fragment of the entire Cosmic expanse we are left
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with the humbling realization that there might always be regions of space entire galaxies and wonders that we will never witness as they Retreat endlessly into the depths of the ever expanding
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universe
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Vocabulaire et conseils d’expression pour cette leçon
Cette vidéo contient 50 phrases et 1561 mots à répéter en shadowing. La partie parlée dure 11:05. Le locuteur parle à un rythme régulier d’environ 141 mots par minute, confortable pour le shadowing. Seuls 72 % des mots font partie des 3 000 mots les plus courants en anglais, le vocabulaire est donc exigeant.
Vocabulaire clé de cette vidéo
15 mots de la vidéo à retenir, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| galaxy nom | /ˈɡæl.ək.si/ | galaxie |
| cosmic adjectif | /ˈkɑz.mɪk/ | cosmique |
| vast adjectif | /væst/ | vaste, immense |
| immense adjectif | /ɪˈmɛns/ | immense |
| cluster nom | /ˈklʌstɚ/ | groupe |
| extend verbe | /ɛkˈstɛnd/ | étendre |
| bubble nom | /ˈbʌbəl/ | bulle |
| boundary nom | /ˈbaʊndɹi/ | frontière, limite |
| cloud nom | /ˈklaʊ̯d/ | nuage |
| expand verbe | /ɪkˈspænd/ | agrandir |
| stretch verbe | /stɹɛt͡ʃ/ | étirer, étendre |
| encounter verbe | /ɪnˈkaʊntɚ/ | rencontrer |
| diameter nom | /daɪˈæmɪdɚ/ | diamètre |
| sphere nom | /sfɪɚ/ | sphère, boule |
| silent adjectif | /ˈsaɪ̯lənt/ | silencieux, se taire |
Les verbes à particule que vous entendrez
| Mot | Prononciation | Sens |
|---|---|---|
| take over verbe | reprendre | |
| zoom out verbe | /ˌzuːm ˈaʊt/ | dézoomer |
Prononciation à surveiller
- Les sons « th »: theoretical /ˌθi.əˈɹɛt.ɪ.kəl/, unfathomable /ˌʌnˈfæð(ə)məb(ə)l/
- Les sons « sh » et « zh »: potentially /pəˈtɛnʃ(ə)li/, exploration /ˌɛkspləˈɹeɪʃən/, suggestion /səˈd͡ʒɛst.ʃən/, measurement /ˈmɛʒ.ə.mənt/, civilization /ˌsɪv.ɪ.laɪˈzeɪ.ʃən/
- Mots longs — placez bien l’accent: diameter /daɪˈæmɪdɚ/, potentially /pəˈtɛnʃ(ə)li/, exploration /ˌɛkspləˈɹeɪʃən/, mysterious /mɪˈstɪɹi.əs/, complexity /kəmˈplɛk.sɪ.ti/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Répétez phrase par phrase à vitesse normale, en reprenant chacune jusqu’à ce que votre rythme corresponde à celui du locuteur.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme galaxy, cosmic, vast.
La grammaire de cette vidéo
Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :
| Structure | Dans la vidéo |
|---|---|
| Voix passive be + participe passé — l’accent est mis sur ce qui arrive, pas sur qui le fait | was ever told · is thought · is stopped |
| Present perfect have/has + participe passé — une action passée qui compte encore maintenant | has been · we've sent · has traveled |
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.