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.
Word Count: 226
The reading passage states that asteroid colonization is more beneficial than establishing colonies on mars or moon. However, the professor in lecture casts doubt on the ideas presented by the reading passage and find them impractical.
First, considering the reading passage gravity is lower in asteroids than in mars or moon so, it will be easier for a spacecraft to land on it or take off from it. also, more equipments can be carried by the spacecraft. In contrast, the professor in the lecture contradicts the information presented by the reading passage and further explains that low gravity can make serious damages to humans' health. Decrease in muscles' mass and bones' density are samples of the troubles which astronauts will face in low gravity.
Second, the reading claims that some asteroids are full of valuable metals like gold and platnium. these worth bank of metals will encourage more businesses to sponser the project. On the contrary, the professor in the lecture refutes the idea and makes the point that we have no idea about the cost of colonization on asteroids and also transferring the mined metals to the earth. Moreover, the price of these materials will reduce as the supplies increase.
Third, the author in the reading passage puts forward the idea that some asteroids near the earth even more than the moon so travelling to them and returning will be easier and less expensive. On the other hand, the speaker in the lecture contradicts the idea and adds that asteroid will not stay at that position untill our spacecraft comes back. Thus, getting into a asteroid may be easier but getting back from them will be an unpredictable challange since asteroids' orbits are unusual and may get too far from earth.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2020-01-16 | Kalima | 81 | view |
| 2019-12-29 | Bonjourkmm | 83 | view |
| 2019-12-27 | Amirreza97 | 3 | view |
| 2019-12-27 | Amirreza97 | 3 | view |
| 2019-12-17 | bishal sitaula | 66 | view |
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Grammar and spelling errors:
Line 13, column 100, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: These
...valuable metals like gold and platnium. these worth bank of metals will encourage mor...
^^^^^
Line 19, column 368, Rule ID: EN_A_VS_AN
Message: Use 'an' instead of 'a' if the following word starts with a vowel sound, e.g. 'an article', 'an hour'
Suggestion: an
...acecraft comes back. Thus, getting into a asteroid may be easier but getting back...
^
Transition Words or Phrases used:
also, but, first, however, may, moreover, second, so, third, thus, in contrast, on the contrary, 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: 11.0 5.04856512141 218% => Less auxiliary verb wanted.
Conjunction : 14.0 7.30242825607 192% => OK
Relative clauses : 8.0 12.0772626932 66% => More relative clauses wanted.
Pronoun: 17.0 22.412803532 76% => OK
Preposition: 40.0 30.3222958057 132% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1469.0 1373.03311258 107% => OK
No of words: 292.0 270.72406181 108% => OK
Chars per words: 5.03082191781 5.08290768461 99% => OK
Fourth root words length: 4.13376432452 4.04702891845 102% => OK
Word Length SD: 2.62684404306 2.5805825403 102% => OK
Unique words: 155.0 145.348785872 107% => OK
Unique words percentage: 0.530821917808 0.540411800872 98% => OK
syllable_count: 446.4 419.366225166 106% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 22.0 21.2450331126 104% => OK
Sentence length SD: 45.9958835308 49.2860985944 93% => OK
Chars per sentence: 113.0 110.228320801 103% => OK
Words per sentence: 22.4615384615 21.698381199 104% => OK
Discourse Markers: 8.76923076923 7.06452816374 124% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 8.0 4.33554083885 185% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => 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: 0.152373964376 0.272083759551 56% => OK
Sentence topic coherence: 0.054776006746 0.0996497079465 55% => OK
Sentence topic coherence SD: 0.0503970160228 0.0662205650399 76% => OK
Paragraph topic coherence: 0.094679887376 0.162205337803 58% => OK
Paragraph topic coherence SD: 0.0349872592154 0.0443174109184 79% => OK
Essay readability:
automated_readability_index: 13.5 13.3589403974 101% => OK
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: 12.19 12.2367328918 100% => OK
dale_chall_readability_score: 8.24 8.42419426049 98% => OK
difficult_words: 65.0 63.6247240618 102% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 10.8 10.498013245 103% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
---------------------
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.