Asteroids are large space objects made of rock and ice. There are hundreds of thousands of asteroids in our solar system. Though we often hear ideas about establishing colonies of humans to live and work on our Moon or our neighboring planet, Mars, some think that sending people to an asteroid would actually be the best colonization option for a number of reasons.
Low Gravity
To begin with, asteroids are often much smaller than planets, so they have lower gravity. When landing a spaceship, the craft would not be pulled as strongly or as forcefully toward the asteroid’s surface, making the landing safer than landing on the Moon or Mars; it would also allow a spacecraft to carry much more equipment needed to set up the colony. It would also be easier for the spacecraft to take off again, so the spaceship would need to carry considerably less fuel for the trip back to Earth.
Mining Valuable Metals
Next, some asteroids are rich in valuable elements and precious metals that are relatively rare on Earth, such as gold and platinum. An asteroid colony would be extremely profitable and a good source of these raw materials. The colonists or businesses sponsoring them could more than pay for the cost of their support by mining minerals and sending them back to Earth.
Easy to Reach
Finally, asteroids are a good option for colonization because some of them would be very easy to reach. There are a number of asteroids that periodically come within or near Earth’s orbit. Some of them actually get closer to Earth than our Moon. So these asteroids would be much easier and more affordable to get to and get back from than a planet like Mars, which would require a two-year trip in each direction.
The reading states that sending people to an asteroid is actually the best colonization option. However, the professor in the listening material strongly objects and points out the logical fallacy of the reading.
First and foremost, the author in the reading argues that the low gravity on the asteroids will make landing safer and allow the spacecraft to take off again easily. However, the lecturer offers an opposite stand that low-gravity environment can also cause risks including loss of muscle mass and bone density. Astronauts, for instance, suffer from health problems related to muscle and bone due to exposure to low-gravity environment. Colonists, on the other hand, who spend much longer time on asteroids than astronauts can catch more serious health problems.
Futhermore, although the lecturer adimits that there are huge amount of valuable metals buried in asteroids stated in the reading material, yet she asserts that compared to the cost of supporting travelling in space and transporting metals, it is not necessarily profitable. Besides, there is no guarantee that the metal price will remain stable for the reason that once plenty of mining minerals was imported, the supply would exceed temporary demand and lead to a decrease in price.
Finally, the professor discusses that it will be difficult to return to earth despite the fact in the reading passage that some asteroids are easy to reach. The asteroid orbit is different from that of planets. Its orbit is irregular that the orbit can move far away from the earth even if currently at one point it is close to the earth. The special trait cannot guarantee that colonists can return at the exact point where asteroids are close to the earth.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2023-09-09 | xujia | 75 | view |
| 2023-07-18 | YasamanEsml | 32 | view |
| 2023-07-18 | YasamanEsml | 3 | view |
| 2023-07-18 | YasamanEsml | 3 | view |
| 2023-07-18 | YasamanEsml | 3 | view |
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Comments
Essay evaluations by e-grader
Grammar and spelling errors:
Line 1, column 54, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...tates that sending people to an asteroid is actually the best colonization optio...
^^
Line 1, column 67, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...nding people to an asteroid is actually the best colonization option. However, t...
^^
Line 5, column 63, Rule ID: THERE_RE_MANY[3]
Message: Possible agreement error. Did you mean 'amounts'?
Suggestion: amounts
...he lecturer adimits that there are huge amount of valuable metals buried in asteroids ...
^^^^^^
Transition Words or Phrases used:
actually, also, besides, finally, first, however, if, so, for instance, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 8.0 7.30242825607 110% => OK
Relative clauses : 14.0 12.0772626932 116% => OK
Pronoun: 17.0 22.412803532 76% => OK
Preposition: 37.0 30.3222958057 122% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1449.0 1373.03311258 106% => OK
No of words: 282.0 270.72406181 104% => OK
Chars per words: 5.13829787234 5.08290768461 101% => OK
Fourth root words length: 4.09790868904 4.04702891845 101% => OK
Word Length SD: 2.58090017669 2.5805825403 100% => OK
Unique words: 170.0 145.348785872 117% => OK
Unique words percentage: 0.602836879433 0.540411800872 112% => OK
syllable_count: 448.2 419.366225166 107% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 53.7191125723 49.2860985944 109% => OK
Chars per sentence: 120.75 110.228320801 110% => OK
Words per sentence: 23.5 21.698381199 108% => OK
Discourse Markers: 7.41666666667 7.06452816374 105% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0809459620837 0.272083759551 30% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0328630552703 0.0996497079465 33% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0262976074536 0.0662205650399 40% => Sentences are similar to each other.
Paragraph topic coherence: 0.0470156545596 0.162205337803 29% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0127494926518 0.0443174109184 29% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 14.5 13.3589403974 109% => OK
flesch_reading_ease: 48.13 53.8541721854 89% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 12.3 11.0289183223 112% => OK
coleman_liau_index: 12.83 12.2367328918 105% => OK
dale_chall_readability_score: 9.14 8.42419426049 108% => OK
difficult_words: 78.0 63.6247240618 123% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
---------------------
It is not exactly right on the topic in the view of e-grader. Maybe there is a wrong essay topic.
Rates: 3.33333333333 out of 100
Scores by essay e-grader: 1.0 Out of 30
---------------------
Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.
Grammar and spelling errors:
Line 1, column 54, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...tates that sending people to an asteroid is actually the best colonization optio...
^^
Line 1, column 67, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...nding people to an asteroid is actually the best colonization option. However, t...
^^
Line 5, column 63, Rule ID: THERE_RE_MANY[3]
Message: Possible agreement error. Did you mean 'amounts'?
Suggestion: amounts
...he lecturer adimits that there are huge amount of valuable metals buried in asteroids ...
^^^^^^
Transition Words or Phrases used:
actually, also, besides, finally, first, however, if, so, for instance, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 8.0 7.30242825607 110% => OK
Relative clauses : 14.0 12.0772626932 116% => OK
Pronoun: 17.0 22.412803532 76% => OK
Preposition: 37.0 30.3222958057 122% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1449.0 1373.03311258 106% => OK
No of words: 282.0 270.72406181 104% => OK
Chars per words: 5.13829787234 5.08290768461 101% => OK
Fourth root words length: 4.09790868904 4.04702891845 101% => OK
Word Length SD: 2.58090017669 2.5805825403 100% => OK
Unique words: 170.0 145.348785872 117% => OK
Unique words percentage: 0.602836879433 0.540411800872 112% => OK
syllable_count: 448.2 419.366225166 107% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 53.7191125723 49.2860985944 109% => OK
Chars per sentence: 120.75 110.228320801 110% => OK
Words per sentence: 23.5 21.698381199 108% => OK
Discourse Markers: 7.41666666667 7.06452816374 105% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0809459620837 0.272083759551 30% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0328630552703 0.0996497079465 33% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0262976074536 0.0662205650399 40% => Sentences are similar to each other.
Paragraph topic coherence: 0.0470156545596 0.162205337803 29% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0127494926518 0.0443174109184 29% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 14.5 13.3589403974 109% => OK
flesch_reading_ease: 48.13 53.8541721854 89% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 12.3 11.0289183223 112% => OK
coleman_liau_index: 12.83 12.2367328918 105% => OK
dale_chall_readability_score: 9.14 8.42419426049 108% => OK
difficult_words: 78.0 63.6247240618 123% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
---------------------
It is not exactly right on the topic in the view of e-grader. Maybe there is a wrong essay topic.
Rates: 3.33333333333 out of 100
Scores by essay e-grader: 1.0 Out of 30
---------------------
Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.