Shadowing Practice: Three Ways to Destroy the Universe - Learn English Speaking with Video
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One day the universe will die.
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But why? And how? And will the universe be dead forever?
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And how do we know that?
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First of all, the universe is expanding.
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And not only that, the rate of its expansion is accelerating.
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The reason: dark energy.
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Dark energy is a strange phenomenon that scientists believe permeates the universe.
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Until 1998 we thought that the universe must work a bit like a ball that you throw into the sky.
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The ball moves up, but at some point it has to come down again.
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But the expansion of the universe is actually speeding up.
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That’s like throwing a ball up and watching it fly away faster and faster and faster.
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Where is this acceleration coming from?
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Well, we don’t know, but we call it “dark energy”.
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Einstein thought of it first and then decided it was stupid.
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Now, astrophysicists have decided it is plausible.
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Trouble is, this is all very theoretical, and we don’t actually know what the properties of dark energy are.
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But there are various theories and they lead us to three scenarios for the end of the universe.
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One: the Big Rip.
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Since its birth, the universe has been expanding.
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For unknown reasons new spaces created everywhere equally.
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The space between galaxies expands, so they move apart.
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The space inside galaxies also expands, but here, gravity is strong enough to keep them together.
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In the Big Rip scenario, the expansion accelerates up to a point where space expands so fast that gravity can’t compensate for this effect anymore.
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The result is a Big Rip.
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At first, only large structures like galaxies are torn apart, since space between the single objects expands very fast.
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Next, big bodies like black holes, stars, and planets die.
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Their gravity isn’t strong enough to keep them together, so they dissolve into their components.
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In the end, space would expand faster than the speed of light.
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Atoms would now be affected, and they would just disband.
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Once space is expanding faster than light, no particle in the universe can interact with any other particle anymore.
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The universe would dissolve into countless lonely particles that won’t be able to touch anything else in a strange, timeless universe.
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Hmm, and you thought you felt lonely!
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Two: Heat death or a Big Freeze.
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In a nutshell, the difference between the Big Rip and heat death is that in a heat death scenario matter stays intact and is converted over an incredibly long but finite period of time into radiation, while the universe expands forever.
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But how does this work? Let’s talk about entropy.
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Every system tends towards the state of highest entropy, like when we have a latte macchiato.
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Initially, it has different regions, but over time, they will cool down and disintegrate, until it’s uniform.
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And this also applies to the universe.
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So, while the universe gets bigger and bigger, matters slowly decays and spreads out.
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At some point, after lots of generations of stars, all the gas clouds necessary to form stars will be exhausted, so the universe will turn dark.
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The remaining suns will die; black holes will slowly degenerate and evaporate over trillions of years due to what’s known as Hawking radiation.
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When this process is complete, only a dilute gas of photons and light particles remains, until even this decays.
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All activity in the universe ceases at this point; entropy is at its maximum and the universe is dead forever.
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Unless… theoretically, it might be possible that after an incredibly long amount of time, there might be a spontaneous entropy decrease as a result of something called “quantum tunneling”, leading to a new Big Bang.
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Three: Big Crunch and Big Bounce.
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This is the most uplifting scenario.
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If there is less dark energy than we think or it decreases over time, gravity will be the dominating force in the universe one day.
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In a few trillion years, the rate of expansion of the universe will slow down and stop.
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After that, it reverses.
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Galaxies will race at each other, merging as the universe becomes smaller and smaller.
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Since a smaller universe also means a hotter universe, temperatures rise everywhere all at once.
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One hundred thousand years before the Big Crunch, background radiation would be hotter than the surfaces of the most stars, which means that they would be cooked from the outside.
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Minutes before the Big Crunch happens, atom cores are ripped apart, before supermassive black holes devour everything.
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Finally, all black holes would emerge into a supermassive mega-black hole that contains the entire mass of the universe, and in the last moment before the Big Crunch it would devour the universe, including itself.
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The Big Bounce theory states that this has happened a lot of times and that the universe goes through an infinite cycle of expansion and contraction.
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Well, wouldn’t that be nice?
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So what will actually happen to the universe in the end?
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At the moment, heat death seems the most likely, but we at Kurzgesagt hope that this “dead forever” stuff is wrong and the universe will start over and over again.
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We don't know for sure either way, so let’s just assume the most uplifting theory is true.
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By the way, we have a Twitter account.
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Subtitles by the Amara.org community
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Vocabulario y notas de pronunciación para esta lección
Esta lección de conversación de nivel C2 se basa en el vídeo “Three Ways to Destroy the Universe”. Las palabras que más se repiten: universe, space, expand, dark, expansion. Este vídeo tiene 61 frases y 883 palabras para practicar shadowing. La parte hablada dura 6:15. El hablante mantiene un ritmo constante de unas 141 palabras por minuto, cómodo para el shadowing. El 82 % de las palabras está entre las 3.000 más comunes del inglés; conviene repasar el resto antes de empezar.
Vocabulario clave de este vídeo
Las 15 palabras más avanzadas del vídeo, con su pronunciación y significado:
| Palabra | Pronunciación | Significado |
|---|---|---|
| entropy sustantivo | /ˈɛntɹəpi/ | entropía |
| particle sustantivo | /ˈpɑɹtək(ə)l/ | partícula |
| devour verbo | /dɪˈvaʊɚ/ | devorar, jambar |
| dissolve verbo | /dɪˈzɑlv/ | disolver |
| supermassive adjetivo | supermasivo | |
| uplifting adjetivo | inspirador, animante | |
| accelerate verbo | /ɪkˈsɛl.əˌɹeɪt/ | acelerar, embalar |
| atom sustantivo | /ˈætəm/ | átomo |
| decay sustantivo | /diˈkeɪ/ | descomposición, deterioración |
| astrophysicist sustantivo | /ˌæstɹəʊˈfɪzɪsɪst/ | astrofísico, astrofísica |
| contraction sustantivo | /kənˈtɹækʃ(ə)n/ | contracción |
| degenerate adjetivo | /dɪˈd͡ʒɛnəɹɪt/ | degenerado |
| dilute verbo | /daɪˈljuːt/ | diluir |
| disband verbo | /dɪsˈbænd/ | desmantelar, disolver |
| disintegrate verbo | /dɪsˈɪntɪɡɹeɪt/ | desintegrar |
Phrasal verbs que vas a escuchar
| Palabra | Pronunciación | Significado |
|---|---|---|
| cool down verbo | /kuːl ˈdaʊn/ | enfriarse |
| go through verbo | atravesar | |
| slow down verbo | desacelerar, decelerar | |
| speed up verbo | /spiːdˈʌp/ | acelerar, apurarse |
| start over verbo | volver a empezar, empezar de cero |
Gramática en este vídeo
Las estructuras que más usa el hablante, con las palabras exactas del vídeo:
| Estructura | En el vídeo |
|---|---|
| Voz pasiva be + participio pasado — importa lo que ocurre, no quién lo hace | are torn · be affected · is converted |
| Present perfect have/has + participio pasado — una acción pasada que sigue importando ahora | have decided · has happened |
Pronunciación a tener en cuenta
El hablante usa 7 contracciones y formas reducidas, como don't, can't, isn't. Dilas en su forma corta, tal como las oyes.
- Los sonidos de “sh” y “zh”: contraction /kənˈtɹækʃ(ə)n/, nutshell /ˈnʌt.ʃɛl/, acceleration /əkˌsɛl.əˈɹeɪ.ʃən/
- Palabras largas — cuida el acento: accelerate /ɪkˈsɛl.əˌɹeɪt/, astrophysicist /ˌæstɹəʊˈfɪzɪsɪst/, degenerate /dɪˈd͡ʒɛnəɹɪt/, disintegrate /dɪsˈɪntɪɡɹeɪt/, evaporate /ɪˈvæp.ə.ɹeɪt/
Sonidos difíciles para hispanohablantes:
- /v/ — no es /b/: los dientes tocan el labio inferior: devour /dɪˈvaʊɚ/, dissolve /dɪˈzɑlv/, evaporate /ɪˈvæp.ə.ɹeɪt/
- /z/ — sonora, no /s/: dissolve /dɪˈzɑlv/, astrophysicist /ˌæstɹəʊˈfɪzɪsɪst/, plausible /ˈplɑ.zɪ.bəl/, exhaust /ɪɡˈzɔst/
- /dʒ/ — no es la “y” ni la “ch”: degenerate /dɪˈd͡ʒɛnəɹɪt/, merge /mɝd͡ʒ/, emerge /ɪˈmɝd͡ʒ/
Cómo practicar con este vídeo
- Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
- Haz shadowing frase por frase a velocidad normal, repitiendo cada una hasta que tu ritmo coincida con el del hablante.
- Grábate y compara con el original, prestando atención a palabras como entropy, particle, devour.
¿Qué es la Técnica de Shadowing?
Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.