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 excerpt states that sending people to an asteroid would actually be the best colonization option for a number of reasons, the author provides three reasons for support. However, the lecture's audio claims that there are a lot of problems with author theories and he refutes each of them by stating the cause behind these reasons is not obvious.
To begin with, the article avers that asteroids often have much smaller gravity than planets. In contrast, the professor opposes this point of view by saying that this is not a practical idea because the low gravity even it has advantages. However, it may lead to many presented risks such as adverse health effects like a loss of muscle mass. Moreover, landing few months there, will cause muscle defects and reduce the bone density. Therefore, the gravity is not a credited reason for landing there.
Second, the passage posits that mining valuable metals next some asteroids are rich in valuable elements and precious metals that are relatively rare on earth. On the other hand, the speaker asserts this outlook by explaining that this is not a profitable idea because this is not the whole picture as they will need additional cost for travel and there is no guarantee that the price of these elements will remain the same because after increasing the supply, this will lead to decrease the cost. Thus, this theory contradicts what the professor explained.
Third, the excerpt mentions that asteroids are a good option for colonization because some of them would be very easy to reach. This cast doubt on what the lecturer argues that even sometimes these asteroids are easy to reach, but, not easy to return as they are orbit and they are unusual to come closer. In addition, they will move to a great distance, sometimes, far than Mars, and not stay close. thus, this would be a challenge if people try to land there. So, this point of view is definitely wrong.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2019-10-02 | Shayooooon | 3 | view |
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Comments
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Grammar and spelling errors:
Line 7, column 403, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Thus
...mes, far than Mars, and not stay close. thus, this would be a challenge if people tr...
^^^^
Transition Words or Phrases used:
actually, but, however, if, look, may, moreover, second, so, therefore, third, thus, even so, in addition, in contrast, such as, to begin with, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 17.0 10.4613686534 163% => OK
Auxiliary verbs: 10.0 5.04856512141 198% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 32.0 22.412803532 143% => Less pronouns wanted
Preposition: 32.0 30.3222958057 106% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1609.0 1373.03311258 117% => OK
No of words: 331.0 270.72406181 122% => OK
Chars per words: 4.86102719033 5.08290768461 96% => OK
Fourth root words length: 4.26537283232 4.04702891845 105% => OK
Word Length SD: 2.34992887853 2.5805825403 91% => OK
Unique words: 184.0 145.348785872 127% => OK
Unique words percentage: 0.555891238671 0.540411800872 103% => OK
syllable_count: 495.9 419.366225166 118% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 3.25607064018 215% => Less pronouns wanted as sentence beginning.
Article: 9.0 8.23620309051 109% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 22.0 21.2450331126 104% => OK
Sentence length SD: 71.945226079 49.2860985944 146% => OK
Chars per sentence: 107.266666667 110.228320801 97% => OK
Words per sentence: 22.0666666667 21.698381199 102% => OK
Discourse Markers: 10.7333333333 7.06452816374 152% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 8.0 4.33554083885 185% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => 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: 0.0618880397195 0.272083759551 23% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0212920131701 0.0996497079465 21% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0254232299442 0.0662205650399 38% => Sentences are similar to each other.
Paragraph topic coherence: 0.0379575744836 0.162205337803 23% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0110176324772 0.0443174109184 25% => 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: 12.5 13.3589403974 94% => Automated_readability_index is low.
flesch_reading_ease: 57.61 53.8541721854 107% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.7 11.0289183223 97% => OK
coleman_liau_index: 10.91 12.2367328918 89% => OK
dale_chall_readability_score: 8.26 8.42419426049 98% => OK
difficult_words: 74.0 63.6247240618 116% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 10.8 10.498013245 103% => OK
text_standard: 11.0 11.2008830022 98% => 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.