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.
Both the reading passage and the lecturer discuss whether asteroids are the best place for colonization. The reading argues that they are indeed the best option for colonization. Nevertheless, the professor disagrees with the passage by proposing three counter arguments mentioned below.
First, the reading suggests that since asteroids have low gravity, it is relatively safe for the spacecrafts compared to landing on the Moon or Mars. Nonetheless, the lecturer dismisses this idea by stating that the gravity actually contains potential risk to human being. To be more specific, according to the experiences of several astronauts, it is evident that people who live in a low gravity environment generally suffer from loosing muscle mass as well as decrease of bone density. Consequently, if people stay in that environment for too long, their health condition might be severely compromised.
Secondly, the passage mentions that several asteroids contain a significant amount of invaluable minerals. However, although the lecturer agrees that the minerals might seem profitable, the reality turns out to be the opposite. To elaborate, the passage forgets to mention that the cost of long term transportation of these minerals might be extremely high. In addition, there is no guarantee that the price of these valuable resources will remain the same after they are exploited in mass scale, this is because the increasing supply for these minerals will result in a decrease of the price in the market.
Last but not least, the reading passage states that asteroids are extremely easy to reach. Yet, the professor disagrees by mentioning that from time to time, the orbiting path of these asteroids are unusual and unpredictable. That is, it is possible that a certain asteroid might move close to the Earth at one point, and gradually move away from us. If this is the case, the cost for the spaceships to travel back to Earth might skyrockets, and this is a relatively difficult challenge to deal with.
All in all, the professor disagrees with all of the theories mentioned in the reading passage. That is to say, the professor maintains that colonizing asteroids is an extraordinarily whimsical idea.
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| 2023-09-09 | xujia | 75 | view |
| 2023-07-18 | YasamanEsml | 32 | view |
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Grammar and spelling errors:
Line 9, column 42, Rule ID: ALL_OF_THE[1]
Message: Simply use 'all the'.
Suggestion: all the
...ll in all, the professor disagrees with all of the theories mentioned in the reading passa...
^^^^^^^^^^
Transition Words or Phrases used:
actually, but, consequently, first, however, if, nevertheless, nonetheless, second, secondly, so, well, in addition, as well as, that is to say
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 20.0 10.4613686534 191% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 16.0 12.0772626932 132% => OK
Pronoun: 30.0 22.412803532 134% => Less pronouns wanted
Preposition: 47.0 30.3222958057 155% => OK
Nominalization: 8.0 5.01324503311 160% => OK
Performance on vocabulary words:
No of characters: 1864.0 1373.03311258 136% => OK
No of words: 354.0 270.72406181 131% => OK
Chars per words: 5.26553672316 5.08290768461 104% => OK
Fourth root words length: 4.33761313653 4.04702891845 107% => OK
Word Length SD: 2.89008316075 2.5805825403 112% => OK
Unique words: 190.0 145.348785872 131% => OK
Unique words percentage: 0.536723163842 0.540411800872 99% => OK
syllable_count: 578.7 419.366225166 138% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 3.25607064018 215% => Less pronouns wanted as sentence beginning.
Article: 13.0 8.23620309051 158% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 42.7676590938 49.2860985944 87% => OK
Chars per sentence: 109.647058824 110.228320801 99% => OK
Words per sentence: 20.8235294118 21.698381199 96% => OK
Discourse Markers: 8.41176470588 7.06452816374 119% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 8.0 4.33554083885 185% => OK
Sentences with negative sentiment : 8.0 4.45695364238 179% => OK
Sentences with neutral sentiment: 1.0 4.27373068433 23% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0723449432057 0.272083759551 27% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0269120030337 0.0996497079465 27% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0285788585117 0.0662205650399 43% => Sentences are similar to each other.
Paragraph topic coherence: 0.0418597603167 0.162205337803 26% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.016984793997 0.0443174109184 38% => 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: 13.8 13.3589403974 103% => OK
flesch_reading_ease: 51.18 53.8541721854 95% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 13.29 12.2367328918 109% => OK
dale_chall_readability_score: 8.64 8.42419426049 103% => OK
difficult_words: 90.0 63.6247240618 141% => OK
linsear_write_formula: 8.5 10.7273730684 79% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Write the essay in 20 minutes.
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
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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.