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 passage states that colonization on an asteroid is possible and beneficial. However, the lecturer believes that colonization procedure is not practical and it has serious downsides. Then, he refutes each of the author's reasons.
First, the passage claims that since asteroids have low garvity, colonists will have a safe landing on the surface. The lecturer opposes this point by reasoning that an asteroid with low gravity, possesses high risks for colonists. that is due to this reason that it causes a decrement in bone density. also, muscle mass will decrease. If colonists want to stay for a long time on an asteroid, health problems will be so serious.
Second, the passage posits that since there are some valuable metals such as gold on the surface of asteroids, transporting these metals to the earth is profitable. The lecturer argues against this point by saying that there are some additional factors that should be considered. Moreover, costs of transporting these metals to the earth are high and hence, will reduce the profits. also, there is no gaurantee that the selling price of products will remain the same. since large quantities of these materials will reduce the price on the earth.
Third, the passage states that some of asteroids are getting closer to earth during their orbit and hence, they are much easier to reach. In contrast, the lecturer believes that these asteroids might be easy to reach but, returning from them is difficult. Owing to this reason that some of them have unusual orbits. also, during their orbit, they might be near the earth in one point and easy to go. While they will not stay at the same point and traveling back from them is very challenging.
Grammar and spelling errors:
Line 5, column 233, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: That
...ty, possesses high risks for colonists. that is due to this reason that it causes a ...
^^^^
Line 5, column 304, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Also
... it causes a decrement in bone density. also, muscle mass will decrease. If colonist...
^^^^
Line 9, column 384, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Also
...igh and hence, will reduce the profits. also, there is no gaurantee that the selling...
^^^^
Line 9, column 469, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Since
...price of products will remain the same. since large quantities of these materials wil...
^^^^^
Line 9, column 469, Rule ID: SENTENCE_FRAGMENT[1]
Message: “since” 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.
...price of products will remain the same. since large quantities of these materials wil...
^^^^^
Line 13, column 32, 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
...th. Third, the passage states that some of asteroids are getting closer to earth during thei...
^^^^^^^^^^^^^^^^^
Line 13, column 317, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Also
... that some of them have unusual orbits. also, during their orbit, they might be near...
^^^^
Transition Words or Phrases used:
also, but, first, hence, however, if, moreover, second, so, then, third, while, in contrast, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 16.0 10.4613686534 153% => OK
Auxiliary verbs: 10.0 5.04856512141 198% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 13.0 12.0772626932 108% => OK
Pronoun: 32.0 22.412803532 143% => Less pronouns wanted
Preposition: 37.0 30.3222958057 122% => OK
Nominalization: 3.0 5.01324503311 60% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1432.0 1373.03311258 104% => OK
No of words: 287.0 270.72406181 106% => OK
Chars per words: 4.98954703833 5.08290768461 98% => OK
Fourth root words length: 4.11595363751 4.04702891845 102% => OK
Word Length SD: 2.4844207358 2.5805825403 96% => OK
Unique words: 149.0 145.348785872 103% => OK
Unique words percentage: 0.519163763066 0.540411800872 96% => OK
syllable_count: 433.8 419.366225166 103% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 18.0 13.0662251656 138% => OK
Sentence length: 15.0 21.2450331126 71% => The Avg. Sentence Length is relatively short.
Sentence length SD: 31.2040773689 49.2860985944 63% => OK
Chars per sentence: 79.5555555556 110.228320801 72% => OK
Words per sentence: 15.9444444444 21.698381199 73% => OK
Discourse Markers: 5.55555555556 7.06452816374 79% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 7.0 4.19205298013 167% => OK
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0685922397575 0.272083759551 25% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0226601403594 0.0996497079465 23% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0231427692759 0.0662205650399 35% => Sentences are similar to each other.
Paragraph topic coherence: 0.042396185179 0.162205337803 26% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0123517275544 0.0443174109184 28% => 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: 10.0 13.3589403974 75% => Automated_readability_index is low.
flesch_reading_ease: 64.71 53.8541721854 120% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.0 11.0289183223 73% => OK
coleman_liau_index: 11.37 12.2367328918 93% => OK
dale_chall_readability_score: 7.96 8.42419426049 94% => OK
difficult_words: 65.0 63.6247240618 102% => OK
linsear_write_formula: 5.5 10.7273730684 51% => Linsear_write_formula is low.
gunning_fog: 8.0 10.498013245 76% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
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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.