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 author and the lecturer discuss whether establishing colonies to live and work on an asteroid is the best option or not. The passage claims that sending people to an asteroid would actually be the best colonization option for a number of reasons. The professor, on the other hand, completely rejects whatever mentioned in the reading through citing three reasons.
First, both the author and the professor talk about asteroids' gravity. According to the passage, asteroids have lower gravity than planets, so landing, taking off, carrying equipment is much more easier than those of other trips. The lecturer, nevertheless, rejects the author's view and illustrates the idea that low gravity impose some risks to people such as loosing muscle mass and bone density.
Second of all, both the reading and the lecture discuss presence of metal on asteroids. The author argues that mining valuable metals would be extremely profitable for businesses sponsoring. However, the professor refutes this, saying that the costs of supporting a colony on steroids and transporting metals are very high which lower the profit. In addition, the price of selling raw metals maybe not remain steady and become lower because of abundance of raw metals.
Eventually, the passage and the lecture address the subject of access to asteroids. The passage goes on to mention that there are a number of asteroids near Earth's orbit periodically. Therefore, asteroids would be much easier and more affordable to get and get back from other planets. In contrast, the professor points out that returning from asteroids maybe become difficult because they get far away and do not stay close to Earth's orbit always. it is possible that they move away unpredictably farther from mars.
All in all, the author maintains that traveling to asteroids would be a better choice than some planets such as mars, while the professor not only cast doubt on, but she also demonstrates that it is not practical because each of the points in the reading have a serious downside.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2019-10-22 | mahan vahab kashi | 3 | view |
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Grammar and spelling errors:
Line 5, column 192, Rule ID: MOST_COMPARATIVE[2]
Message: Use only 'easier' (without 'more') when you use the comparative.
Suggestion: easier
... taking off, carrying equipment is much more easier than those of other trips. The lecturer...
^^^^^^^^^^^
Line 13, column 429, Rule ID: TO_NON_BASE[1]
Message: The verb after "to" should be in the base form: 'earth'.
Suggestion: Earth
...y get far away and do not stay close to Earths orbit always. it is possible that they ...
^^^^^^
Line 13, column 450, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: It
... not stay close to Earths orbit always. it is possible that they move away unpredi...
^^
Transition Words or Phrases used:
actually, also, but, first, however, if, may, nevertheless, second, so, therefore, while, in addition, in contrast, such as, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 14.0 7.30242825607 192% => OK
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 16.0 22.412803532 71% => OK
Preposition: 39.0 30.3222958057 129% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1728.0 1373.03311258 126% => OK
No of words: 334.0 270.72406181 123% => OK
Chars per words: 5.17365269461 5.08290768461 102% => OK
Fourth root words length: 4.27500489853 4.04702891845 106% => OK
Word Length SD: 2.60040238834 2.5805825403 101% => OK
Unique words: 182.0 145.348785872 125% => OK
Unique words percentage: 0.544910179641 0.540411800872 101% => OK
syllable_count: 521.1 419.366225166 124% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 16.0 13.0662251656 122% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 50.2392712427 49.2860985944 102% => OK
Chars per sentence: 108.0 110.228320801 98% => OK
Words per sentence: 20.875 21.698381199 96% => OK
Discourse Markers: 8.875 7.06452816374 126% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => 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: 0.117259357364 0.272083759551 43% => OK
Sentence topic coherence: 0.0390628567331 0.0996497079465 39% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0398342580904 0.0662205650399 60% => OK
Paragraph topic coherence: 0.0662668347806 0.162205337803 41% => OK
Paragraph topic coherence SD: 0.0304254355448 0.0443174109184 69% => OK
Essay readability:
automated_readability_index: 13.4 13.3589403974 100% => OK
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: 12.71 12.2367328918 104% => OK
dale_chall_readability_score: 8.46 8.42419426049 100% => OK
difficult_words: 81.0 63.6247240618 127% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 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.