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 writer and the professor have a debate over colonizing asteroids. Colonization on an asteroid, in the author's view, is the best choice. The professor, however, contradicts that sending people to asteroid is not practical beacuse of the following reasons.
To begin with, as opposed to the writer's opinion that lower gravity on asteroids makes landing safer, the professor argues that it has more risks such as health problem. In accordance with the professor, people who work in low gravity enviornment suffer from the decreasing mussel density. This problem is common for people who stay in spaceship for few monthes, let alone live on asteroids for a longer time. Therefore, it is dengerous for people to live on asteroids.
In addition, the author believes that valuable elements abundant on asteroids, such as gold or platinum, is profitable. On the contrary, the professor contend that this will not make profit for two reasons. First, the cost of colonizing asteroid is considerably high, so these materials is arduous to cover the cost of colonization. Second, even if a certain material is expensive now, the price will not remain the same after plenty of such material is produced on asteroids. As the amount of a product on the market increase, the prize will definitely drop quickly, and thus will not be profitable.
Finally, the writer holds that it is easy for people to reach asteroids because some of asteroids may periodically approach earth. But the professor thinks it don't hold water because people will find it onerous to return to the earth. To be more specific, most asteroids keep moving and don't stay in a place. As a result, even though it may close to earth sometimes, after human land on a asteroid, it will travel far away from earth, making it difficult to return back to the earth.
In conclusion, the professor believes that sending people to asteroids is not pragmatic.
| 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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Grammar and spelling errors:
Line 3, column 34, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'writers'' or 'writer's'?
Suggestion: writers'; writer's
...ns. To begin with, as opposed to the writers opinion that lower gravity on asteroids...
^^^^^^^
Line 5, column 371, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...n. Second, even if a certain material is expensive now, the price will not remain...
^^
Line 7, column 81, Rule ID: MOST_SOME_OF_NNS[1]
Message: After 'some of', you should use 'the' ('some of the asteroids') or simply say ''some asteroids''.
Suggestion: some of the asteroids; some asteroids
...y for people to reach asteroids because some of asteroids may periodically approach earth. But th...
^^^^^^^^^^^^^^^^^
Line 7, column 160, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...oach earth. But the professor thinks it dont hold water because people will find it ...
^^^^
Line 7, column 288, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...pecific, most asteroids keep moving and dont stay in a place. As a result, even thou...
^^^^
Line 7, column 351, Rule ID: ADVERB_WORD_ORDER[9]
Message: The adverb 'sometimes' is usually put before the verb 'earth'.
Suggestion: sometimes earth
...s a result, even though it may close to earth sometimes, after human land on a asteroid, it wil...
^^^^^^^^^^^^^^^
Line 7, column 388, Rule ID: EN_A_VS_AN
Message: Use 'an' instead of 'a' if the following word starts with a vowel sound, e.g. 'an article', 'an hour'
Suggestion: an
...to earth sometimes, after human land on a asteroid, it will travel far away from ...
^
Line 7, column 459, Rule ID: RETURN_BACK[1]
Message: Use simply 'return'.
Suggestion: return
...away from earth, making it difficult to return back to the earth. In conclusion, the pr...
^^^^^^^^^^^
Transition Words or Phrases used:
but, finally, first, however, if, may, second, so, therefore, thus, in addition, in conclusion, such as, as a result, on the contrary, to begin with
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 8.0 5.04856512141 158% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 18.0 22.412803532 80% => OK
Preposition: 42.0 30.3222958057 139% => OK
Nominalization: 5.0 5.01324503311 100% => OK
Performance on vocabulary words:
No of characters: 1602.0 1373.03311258 117% => OK
No of words: 319.0 270.72406181 118% => OK
Chars per words: 5.02194357367 5.08290768461 99% => OK
Fourth root words length: 4.22617688928 4.04702891845 104% => OK
Word Length SD: 2.73180540717 2.5805825403 106% => OK
Unique words: 169.0 145.348785872 116% => OK
Unique words percentage: 0.529780564263 0.540411800872 98% => OK
syllable_count: 495.9 419.366225166 118% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 6.0 1.25165562914 479% => Less adverbial clause wanted.
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 8.0 2.5761589404 311% => Less preposition wanted as sentence beginnings.
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 32.7719392163 49.2860985944 66% => OK
Chars per sentence: 94.2352941176 110.228320801 85% => OK
Words per sentence: 18.7647058824 21.698381199 86% => OK
Discourse Markers: 8.70588235294 7.06452816374 123% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 8.0 4.19205298013 191% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 6.0 4.27373068433 140% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.103317458732 0.272083759551 38% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.03660389196 0.0996497079465 37% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0300940118413 0.0662205650399 45% => Sentences are similar to each other.
Paragraph topic coherence: 0.0622591321417 0.162205337803 38% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0273304203116 0.0443174109184 62% => OK
Essay readability:
automated_readability_index: 11.6 13.3589403974 87% => Automated_readability_index is low.
flesch_reading_ease: 53.21 53.8541721854 99% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 11.84 12.2367328918 97% => OK
dale_chall_readability_score: 8.14 8.42419426049 97% => OK
difficult_words: 73.0 63.6247240618 115% => OK
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
---------------------
Rates: 66.6666666667 out of 100
Scores by essay e-grader: 20.0 Out of 30
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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.