EN2-M14-Exercise Long Conversation 2
Jun 18, 2026 07:12
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Questions 1 through 4.
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Listen to a conversation in an astronomy class.
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Professor Carmichael,
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I'd like to ask a question.
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You just said that,
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according to Einstein,
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nothing can go faster than the speed of light.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Is that right?
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Yes,
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Ted. That's what Einstein said,
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and most scientists agree with him.
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Then does that mean that we could never build spaceships to go to other stars?
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Well,
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let's think about it.
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Do you remember how far it is to the nearest star?
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Uh,
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I think you said a few days ago that it's about four light
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years.
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About that.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
And how fast does light travel?
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Around 186 ,000 miles per second.
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Yes.
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And a light year is the distance light travels in a year.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Imagine that.
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A light year is the equivalent of almost six trillion miles.
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But what if we built a ship that could go almost as fast as
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
light?
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Then we could get to the closest star in four or five years.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
That's true in theory.
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Unfortunately,
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there are no spaceships that can even approach the speed of light.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Even if we built ships that are much faster than the rockets we have
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
today, it would probably take hundreds or thousands of years to
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get to the closest stars.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
How could you carry enough fuel to last that long?
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
We'd need a completely different method of powering spaceship.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
So you're saying that you don't think people will ever be able to travel to the
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stars?
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Well,
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I don't want to say never,
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Ted. Who knows what kinds of scientific breakthroughs there will be?
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But I think,
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for the foreseeable future,
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there will only be starships in science fiction movies and books.
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Speaker 2 (EN2-M14-Exercise Long Conversation 2)
Number
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one.
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What had Professor Carmichael been talking about when Ted asked
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her a question?
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Speaker 2 (EN2-M14-Exercise Long Conversation 2)
Number
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two.
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If a ship could travel almost as fast as light.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
How long would it take to get to the closest star?
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Speaker 2 (EN2-M14-Exercise Long Conversation 2)
Number
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
3.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
According to Professor Carmichael,
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
what must be developed before ships can travel to the closest stars?
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Speaker 2 (EN2-M14-Exercise Long Conversation 2)
Number
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
4.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
How does Professor Carmichael characterize travel to other
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
stars?
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Speaker 2 (EN2-M14-Exercise Long Conversation 2)
This
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
is the end of Part B.
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Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Go on to Part C.
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