Shadowing Practice: NASA | Tour of the Moon - Learn English Speaking with Video

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To nearly everyone, the Moon appears to be a sterile, gray, unchanging world.

But while the Moon has remained largely unchanged during human history, our own understanding of it has evolved dramatically.

Thanks to new observations, we now have not only unprecedented views of its surface, but a whole new tour of the Moon that shows how both it

and other rocky planets in our solar system have been shaped over billions of years.

We'll start with one of the largest impacts, Oriental Basin, a feature that's as wide as the distance from New York City to Cincinnati.

Using new elevation measurements, we can clearly see the effects of what is likely the last giant impact event in lunar history,

with its outer mountain rings rising many kilometers above the lowest points inside the crater.

The interiors of some craters in the Moon's polar regions, like Shackleton, haven't seen sunlight in over two billion years.

However, new measurements have created our best yet maps of these types of craters, allowing us to see deep into the shadows of this surprisingly

young-looking impact crater in the south that's more than twice as deep as the Grand Canyon.

Some impacts are invisible for other reasons.

Although the ancient South Pole-Aitken Basin is difficult to see from orbit because it is so large,

new LRO topography maps reveal the largest impact basin in the Earth-Moon system, measuring several kilometers in depth and around 2,500 kilometers in diameter.

Only the Hellas Basin on Mars rivals it in size.

One of the youngest large-scale impacts on the Moon is the Tycho Crater.

This fresh crater may have formed only 108 million years ago, when dinosaurs roamed the Earth.

We now also have an extreme close-up view of the crater's central peak, revealing a a mountain with sharp edges,

building-sized rocks, and a central boulder about the size of a baseball stadium.

The Aristarchus Plateau is another recent lunar formation that has long interested scientists and astronomers.

The crater itself, formed in the same era as the Tycho Crater, and what appear to be snaking river valleys, were actually carved by ancient lava flows.

Next, we arrive at Mare Serenitatis on the near side of the Moon.

In December of 1972, the crew of Apollo 17 landed in the Taurus-Littro Valley,

marking the last time humans have visited the surface of the Moon.

With images from LRO's narrow-angle camera, we can clearly see the evidence of that visit.

In this image, you can easily see the base of the lunar lander, along with the lunar rover, parked far from the blastoff zone.

You can also clearly see the astronaut trails and the wheel tracks left on the lunar surface.

We now head to the far side of the Moon, which cannot be seen from Earth.

Our first stop is the Compton-Belcovich region, which shows evidence for young volcanic activity in the Far Side Highlands.

This feature is unique not only because it is isolated from other volcanoes in the area, but also because it is located nowhere near the Maria,

where volcanoes are usually found.

Also, on the Far Side, we find the Jackson Crater, which like the Tycho Crater on the near side has an extensive and complex ray system.

In fact, this crater is often considered to be like a twin to Tycho.

Finally, the Tsiolkovsky Crater stands out as an excellent example of a far side crater filled with a sea of ancient lava, known as a mare.

It is particularly interesting to scientists and other observers

because of its isolation from other similar craters as well as its beautiful central peak.

As we continue to study the Moon, our understanding of it improves, giving us new insights not only into how it has evolved over time,

but also how other rocky planets in our solar system have come to look the way they do.

With new missions, new instruments and new technologies, we will continue to improve our knowledge of the Moon and better understand the history of our solar system.

Thank you.

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Vocabulario y notas de pronunciación para esta lección

Las palabras que más se repiten: crater, Moon, impact, lunar, Tycho. Este vídeo tiene 39 frases y 686 palabras para practicar shadowing. La parte hablada dura 4:41. El hablante mantiene un ritmo constante de unas 146 palabras por minuto, cómodo para el shadowing. Solo el 79 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es exigente.

Vocabulario clave de este vídeo

Las 15 palabras más avanzadas del vídeo, con su pronunciación y significado:

Palabra	Pronunciación	Significado
crater sustantivo	/ˈkɹeɪ.tɚ/	cráter
lunar adjetivo	/ˈlunɚ/	lunar
basin sustantivo	/ˈbeɪsɪn/	pileta, lavabo
lava sustantivo	/ˈlɑvə/	lava
volcano sustantivo	/vɑlˈkeɪ.noʊ/	volcán
evolve verbo	/ɪˈvɑlv/	desarrollar
measurement sustantivo	/ˈmɛʒ.ə.mənt/	medida, medición
astronomer sustantivo	/əˈstɹɒn.ə.mə/	astrónomo, astrónoma
sterile adjetivo	/ˈstɛɹəl/	estéril
topography sustantivo	/təˈpɑɡɹəfi/	topografía
unchanging adjetivo		inmovilista, no cambiante
isolate verbo	/ˈaɪ.sə.leɪt/	aislar
astronaut sustantivo	/ˈæstɹəˌnɔt/	astronauta
volcanic adjetivo	/vɔlˈkænɪk/	volcánico
boulder sustantivo	/ˈboʊl.dɚ/	peña, peñasco

Gramática en este vídeo

Las estructuras que más usa el hablante, con las palabras exactas del vídeo:

Estructura	En el vídeo
Present perfect have/has + participio pasado — una acción pasada que sigue importando ahora	has remained · have not only unprecedented · have been shaped
Voz pasiva be + participio pasado — importa lo que ocurre, no quién lo hace	have been shaped · were actually carved · cannot be seen

Pronunciación a tener en cuenta

Los sonidos de “sh” y “zh”: measurement /ˈmɛʒ.ə.mənt/, elevation /ˌɛlɪˈveɪʃn̩/, isolation /ˌaɪsəˈleɪʃən/
Palabras largas — cuida el acento: astronomer /əˈstɹɒn.ə.mə/, topography /təˈpɑɡɹəfi/, unprecedented /ʌnˈpɹɛsɪdɛntɪd/, isolation /ˌaɪsəˈleɪʃən/, diameter /daɪˈæmɪdɚ/

Sonidos difíciles para hispanohablantes:

/v/ — no es /b/: los dientes tocan el labio inferior: lava /ˈlɑvə/, volcano /vɑlˈkeɪ.noʊ/, evolve /ɪˈvɑlv/, volcanic /vɔlˈkænɪk/, rover /ˈɹoʊvɚ/
/z/ — sonora, no /s/: observer /əbˈzɝvɚ/, surprisingly /səˈpɹaɪzɪŋli/, invisible /ɪnˈvɪzəb(ə)l/

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 crater, lunar, basin.

¿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.

Técnica de shadowing: lee la guía completa paso a paso →

Shadowing Practice: NASA | Tour of the Moon - Learn English Speaking with Video

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