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.
n this set of materials, the author strongly postulates that asteroid colonization has benefits and provides three reasons to endorse its idea. On the other hand, the professor states that asteroid colonization is not practical and refutes each of the reasons mentioned in the reading.
First and foremost, the passage begins by asserting that asteroids have low gravity than earth which makes the landing and take-off of spacecraft safe and easy, it requires less fuel and can transfer more equipment to the asteroids. However, the professor explains that low gravity has many risks. Astronauts suffer from a decrease in muscle mass and low bone density while they live there for a shorter period of time. Imagine the risk to the people who will live on the asteroids for the long term.
Moreover, the professor in the lecture further points out that mining on the asteroids costs more than on earth. Transferring the additional machinery on asteroids for mining will be expensive too. If we transfer more metal from asteroids to earth the price will not be the same due to a large supply of metals. These claims refute the author's implication of asteroids have valuable metals like gold and platinum. Mining on asteroids would be beneficial.
Ultimately, the article wraps its reasons by declaring that asteroids are easy and affordable to reach because the asteroids come close to the earth. However, the professor refutes this point by insisting that it may be easy to reach but difficult to return to the earth because asteroids are close to the earth at one point but go far on the other point. Asteroids continuously change the orbits which make the return to the challengable.-
| 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 1, column 1, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: N
n this set of materials, the author stron...
^
Line 2, column 404, Rule ID: PERIOD_OF_TIME[1]
Message: Use simply 'period'.
Suggestion: period
...ity while they live there for a shorter period of time. Imagine the risk to the people who wil...
^^^^^^^^^^^^^^
Line 3, column 198, Rule ID: SENTENCE_FRAGMENT[1]
Message: “If” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...roids for mining will be expensive too. If we transfer more metal from asteroids t...
^^
Line 3, column 336, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'authors'' or 'author's'?
Suggestion: authors'; author's
...pply of metals. These claims refute the authors implication of asteroids have valuable ...
^^^^^^^
Transition Words or Phrases used:
but, first, however, if, may, moreover, so, while, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 10.4613686534 67% => OK
Auxiliary verbs: 6.0 5.04856512141 119% => OK
Conjunction : 11.0 7.30242825607 151% => OK
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 16.0 22.412803532 71% => OK
Preposition: 37.0 30.3222958057 122% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1408.0 1373.03311258 103% => OK
No of words: 281.0 270.72406181 104% => OK
Chars per words: 5.01067615658 5.08290768461 99% => OK
Fourth root words length: 4.09427095027 4.04702891845 101% => OK
Word Length SD: 2.64438434838 2.5805825403 102% => OK
Unique words: 153.0 145.348785872 105% => OK
Unique words percentage: 0.544483985765 0.540411800872 101% => OK
syllable_count: 438.3 419.366225166 105% => 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: 7.0 8.23620309051 85% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 14.0 13.0662251656 107% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 50.5500862956 49.2860985944 103% => OK
Chars per sentence: 100.571428571 110.228320801 91% => OK
Words per sentence: 20.0714285714 21.698381199 93% => OK
Discourse Markers: 4.85714285714 7.06452816374 69% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.129227528 0.272083759551 47% => OK
Sentence topic coherence: 0.0529544489088 0.0996497079465 53% => OK
Sentence topic coherence SD: 0.0254162407326 0.0662205650399 38% => Sentences are similar to each other.
Paragraph topic coherence: 0.0801547636718 0.162205337803 49% => OK
Paragraph topic coherence SD: 0.0184091286761 0.0443174109184 42% => 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: 12.2 13.3589403974 91% => Automated_readability_index is low.
flesch_reading_ease: 51.18 53.8541721854 95% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 11.78 12.2367328918 96% => OK
dale_chall_readability_score: 8.28 8.42419426049 98% => OK
difficult_words: 65.0 63.6247240618 102% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
---------------------
Rates: 70.0 out of 100
Scores by essay e-grader: 21.0 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.