EN2-M14-Exercise Long Conversation 2

Jun 18, 2026 07:12 · 3:17 · English · Whisper Turbo · 2 speakers
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Lecture Index
Uitsluitend tonen
0:04
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Questions 1 through 4.
0:06
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Listen to a conversation in an astronomy class.
0:10
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Professor Carmichael,
0:13
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I'd like to ask a question.
0:14
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You just said that,
0:16
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
according to Einstein,
0:17
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nothing can go faster than the speed of light.
0:20
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Is that right?
0:21
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Yes,
0:22
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Ted. That's what Einstein said,
0:24
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and most scientists agree with him.
0:26
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Then does that mean that we could never build spaceships to go to other stars?
0:30
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Well,
0:31
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let's think about it.
0:33
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Do you remember how far it is to the nearest star?
0:35
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Uh,
0:36
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I think you said a few days ago that it's about four light
0:40
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years.
0:40
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About that.
0:41
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
And how fast does light travel?
0:44
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Around 186 ,000 miles per second.
0:48
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Yes.
0:48
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And a light year is the distance light travels in a year.
0:52
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Imagine that.
0:53
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A light year is the equivalent of almost six trillion miles.
0:57
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
But what if we built a ship that could go almost as fast as
1:01
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
light?
1:02
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Then we could get to the closest star in four or five years.
1:05
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That's true in theory.
1:07
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Unfortunately,
1:08
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there are no spaceships that can even approach the speed of light.
1:12
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Even if we built ships that are much faster than the rockets we have
1:16
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
today, it would probably take hundreds or thousands of years to
1:20
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get to the closest stars.
1:21
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How could you carry enough fuel to last that long?
1:24
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We'd need a completely different method of powering spaceship.
1:29
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So you're saying that you don't think people will ever be able to travel to the
1:33
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stars?
1:33
S… Speaker 1 (EN2-M14-Exercise Long Conversation 2)
Well,
1:34
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I don't want to say never,
1:35
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Ted. Who knows what kinds of scientific breakthroughs there will be?
1:39
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But I think,
1:40
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for the foreseeable future,
1:42
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there will only be starships in science fiction movies and books.
1:46
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Number
1:51
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one.
1:52
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What had Professor Carmichael been talking about when Ted asked
1:56
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her a question?
1:57
S… Speaker 2 (EN2-M14-Exercise Long Conversation 2)
Number
2:06
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two.
2:06
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If a ship could travel almost as fast as light.
2:10
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How long would it take to get to the closest star?
2:13
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Number
2:23
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3.
2:23
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According to Professor Carmichael,
2:26
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what must be developed before ships can travel to the closest stars?
2:30
S… Speaker 2 (EN2-M14-Exercise Long Conversation 2)
Number
2:40
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4.
2:40
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How does Professor Carmichael characterize travel to other
2:45
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stars?
2:45
S… Speaker 2 (EN2-M14-Exercise Long Conversation 2)
This
2:55
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is the end of Part B.
2:56
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Go on to Part C.

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