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 states that it is the a better course of action for people to establish colonies on asterionds than on Mars or Moon, and provides some reasons for this theory. The lecturer, however, finds the idea dubious and casts doubt on the reasons proposed by the reading passage.
The author argues that asteroids' low gravity provides the a better and easier opportunity for scapeships to land on them and establish the colonies. Conversely, the lecturer brings up the idea that their low gravity brings about some heath problems for people and face them lower muscle mass and bones density. Although for asteronaut who spend few months on the asteroid it will be solved by regular exercises, it may cause serious problems for people who spend long time on that places.
Furthermore, the reading passage holds the view that there are valuble metals on some asteroids and mining them and sending back to Earth can be profitable for people. On the contrary, the professor underlines the fact that, although these metals are valuable, the cost of their supporting and transportation procedures to the Earth may decline its profit.
Finally, the reading states that due to the close distance of these asteroids to Earth, reaching them is easy for humans to land on them. In contrast, the speaker dismisses this issue due to the fact that these asteroids get closer to the Earth by its orbit, but after that they may move away further. As a result, when humans reach the asteroid in close distance they may not be able to return to the Earth regarding to their far distance from Earth.
Grammar and spelling errors:
Line 1, column 31, Rule ID: DT_DT[1]
Message: Maybe you need to remove one determiner so that only 'the' or 'a' is left.
Suggestion: the; a
The reading states that it is the a better course of action for people to e...
^^^^^
Line 2, column 1, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...asons proposed by the reading passage. The author argues that asteroids low gravit...
^^^
Line 2, column 55, Rule ID: DT_DT[1]
Message: Maybe you need to remove one determiner so that only 'the' or 'a' is left.
Suggestion: the; a
...ues that asteroids low gravity provides the a better and easier opportunity for scape...
^^^^^
Transition Words or Phrases used:
but, conversely, finally, furthermore, however, may, regarding, so, in contrast, as a result, on the contrary
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 : 12.0 12.0772626932 99% => OK
Pronoun: 29.0 22.412803532 129% => Less pronouns wanted
Preposition: 34.0 30.3222958057 112% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1315.0 1373.03311258 96% => OK
No of words: 271.0 270.72406181 100% => OK
Chars per words: 4.85239852399 5.08290768461 95% => OK
Fourth root words length: 4.05734859645 4.04702891845 100% => OK
Word Length SD: 2.43755358115 2.5805825403 94% => OK
Unique words: 144.0 145.348785872 99% => OK
Unique words percentage: 0.531365313653 0.540411800872 98% => OK
syllable_count: 396.0 419.366225166 94% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 4.0 1.25165562914 320% => Less adverbial clause wanted.
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 10.0 13.0662251656 77% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 27.0 21.2450331126 127% => The Avg. Sentence Length is relatively long.
Sentence length SD: 21.3494730614 49.2860985944 43% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 131.5 110.228320801 119% => OK
Words per sentence: 27.1 21.698381199 125% => OK
Discourse Markers: 10.9 7.06452816374 154% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => 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: 0.108694073441 0.272083759551 40% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0477379093713 0.0996497079465 48% => OK
Sentence topic coherence SD: 0.0248950282682 0.0662205650399 38% => Sentences are similar to each other.
Paragraph topic coherence: 0.0667921614682 0.162205337803 41% => OK
Paragraph topic coherence SD: 0.0179192433705 0.0443174109184 40% => 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: 15.0 13.3589403974 112% => OK
flesch_reading_ease: 52.53 53.8541721854 98% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 12.6 11.0289183223 114% => OK
coleman_liau_index: 11.15 12.2367328918 91% => OK
dale_chall_readability_score: 8.7 8.42419426049 103% => OK
difficult_words: 64.0 63.6247240618 101% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 12.8 10.498013245 122% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
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Rates: 76.6666666667 out of 100
Scores by essay e-grader: 23.0 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.