Now listen to a part of a lecture on the topic you just read about.
Asteroid colonization is not a very practical idea. Each of the points in the reading has a serious downside.
First, while low gravity on an asteroid would make landing and taking off relatively easy, low-gravity environments also present certain risks. In a low-gravity environment, people start losing muscle mass and their bone density becomes lower. Even astronauts who spend just a few months in spaceships, which are low-gravity environments, suffer from health problems like muscle and bone density loss. Imagine the health problems that long-term colonists would experience on asteroids.
Second, the availability of valuable metals might make an asteroid colony seem like a profitable idea but that's not the whole picture. You have to consider additional factors. One thing is the costs. The costs of supporting a colony and of transporting the metals are likely to be high and will reduce the profits. And furthermore, there's no guarantee that the price for which you can sell the metals will remain the same. If precious metals are mined in large quantities, it would increase the supply of the metals, which could end up lower in the market price. So mining on asteroids may not be very profitable.
Third, even if some asteroids are easy to reach, they may not be easy to return from. Asteroid orbits, the path on which asteroids travel through space, can be unusual. Some orbital paths come close to earth but then move away from earth, often a great distance away from earth. So even if an asteroid gets close to earth at one point, making it easy for colonists to get to the asteroid, it does not stay close to earth. It can actually travel much farther away from earth than a planet like Mars. Getting back from an asteroid that travels that far would be a challenge.
the article states that asteroids, rocky or icy objects are in space, are best choice to colonisation, and provides three reasons for support. However, the professor explains that asteroids colonization is not practical idea and refutes each of the author's reasons.
first, the reading claims that due to low gravity of asteroids landing a spaceship is easy. the professor opposes this point by saying that low gravity cause serious damage to spaceman and has several risks. he also states that both lossing mass and suffering health problem in long term are few example of those problems.
second, the article posits that valuable matal through mining in asteroids and back to earth is another reason for this purpose. in contrast, the professor says cost is crucial factor should be considered. according to the professor, supporting spaceship and trasporting the ore consume a massive amount of money. furthermore, processing those metal do not guarantee prices as same profit reach in the earth. increasing the supply of valuable matal by defaut leading to reduction in market prices and is not profitable.
third, the article says that readily accessible to the asteroids surface is a last reason to landing on the asteroids' surface. the professor casts doubt on this point by explaining that is partly tru that reach is easy, but retain is certain cause for rejection this reason. asteroids orbit in unusal, not passing close to the earth, but go more away. so the first is easy but the second is challenging.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2019-10-24 | monica1315 | 83 | view |
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Grammar and spelling errors:
Line 1, column 1, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: The
the article states that asteroids, rocky or...
^^^
Line 1, column 71, Rule ID: THE_SUPERLATIVE[4]
Message: A determiner is probably missing here: 'are the best'.
Suggestion: are the best
...ids, rocky or icy objects are in space, are best choice to colonisation, and provides th...
^^^^^^^^
Line 1, column 181, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'asteroids'' or 'asteroid's'?
Suggestion: asteroids'; asteroid's
...t. However, the professor explains that asteroids colonization is not practical idea and ...
^^^^^^^^^
Line 7, column 1, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: First
...es each of the authors reasons. first, the reading claims that due to low gra...
^^^^^
Line 7, column 93, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: The
... asteroids landing a spaceship is easy. the professor opposes this point by saying ...
^^^
Line 7, column 209, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: He
...mage to spaceman and has several risks. he also states that both lossing mass and ...
^^
Line 7, column 293, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun example seems to be countable; consider using: 'few examples'.
Suggestion: few examples
...ffering health problem in long term are few example of those problems. second, the ...
^^^^^^^^^^^
Line 13, column 1, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Second
... few example of those problems. second, the article posits that valuable matal...
^^^^^^
Line 13, column 130, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: In
...rth is another reason for this purpose. in contrast, the professor says cost is cr...
^^
Line 13, column 207, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: According
...is crucial factor should be considered. according to the professor, supporting spaceship ...
^^^^^^^^^
Line 13, column 315, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Furthermore
... ore consume a massive amount of money. furthermore, processing those metal do not guarante...
^^^^^^^^^^^
Line 13, column 410, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Increasing
...ices as same profit reach in the earth. increasing the supply of valuable matal by defaut ...
^^^^^^^^^^
Line 19, column 1, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Third
...t prices and is not profitable. third, the article says that readily accessib...
^^^^^
Line 19, column 128, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: The
...on to landing on the asteroids surface. the professor casts doubt on this point by ...
^^^
Line 19, column 276, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Asteroids
...ertain cause for rejection this reason. asteroids orbit in unusal, not passing close to t...
^^^^^^^^^
Line 19, column 353, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: So
...g close to the earth, but go more away. so the first is easy but the second is cha...
^^
Transition Words or Phrases used:
also, but, first, furthermore, however, second, so, third, in contrast
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 15.0 10.4613686534 143% => OK
Auxiliary verbs: 1.0 5.04856512141 20% => OK
Conjunction : 11.0 7.30242825607 151% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 16.0 22.412803532 71% => OK
Preposition: 27.0 30.3222958057 89% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1294.0 1373.03311258 94% => OK
No of words: 249.0 270.72406181 92% => More content wanted.
Chars per words: 5.19678714859 5.08290768461 102% => OK
Fourth root words length: 3.97237131171 4.04702891845 98% => OK
Word Length SD: 2.62330473145 2.5805825403 102% => OK
Unique words: 149.0 145.348785872 103% => OK
Unique words percentage: 0.598393574297 0.540411800872 111% => OK
syllable_count: 387.0 419.366225166 92% => 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: 8.0 8.23620309051 97% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 3.0 1.51434878587 198% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 14.0 13.0662251656 107% => OK
Sentence length: 17.0 21.2450331126 80% => The Avg. Sentence Length is relatively short.
Sentence length SD: 25.9902846841 49.2860985944 53% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 92.4285714286 110.228320801 84% => OK
Words per sentence: 17.7857142857 21.698381199 82% => OK
Discourse Markers: 5.0 7.06452816374 71% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 16.0 4.19205298013 382% => Less language errors wanted.
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => 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: 0.185060318127 0.272083759551 68% => OK
Sentence topic coherence: 0.0639099126807 0.0996497079465 64% => OK
Sentence topic coherence SD: 0.0824884687029 0.0662205650399 125% => OK
Paragraph topic coherence: 0.115233867058 0.162205337803 71% => OK
Paragraph topic coherence SD: 0.0615627092033 0.0443174109184 139% => OK
Essay readability:
automated_readability_index: 12.0 13.3589403974 90% => Automated_readability_index is low.
flesch_reading_ease: 54.22 53.8541721854 101% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.9 11.0289183223 90% => OK
coleman_liau_index: 12.58 12.2367328918 103% => OK
dale_chall_readability_score: 8.86 8.42419426049 105% => OK
difficult_words: 69.0 63.6247240618 108% => OK
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 8.8 10.498013245 84% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
---------------------
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
---------------------
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.