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.
Both lecturer and author talk about the feasibility of colonization on an asteroid near Earth. They pay to three main aspects of this prospective plan.
First, the author indicates that asteroids are much smaller than the planets, so they have much less gravity compared with the planets. Therefore, landing the spacecraft will be safer rather than landing on the Moon and Mars. On the other hand, the lecturer accounts for some serious risks that would occur for the spacemen because of the low gravity. She implies that low gravity causes losing muscle mass, and bone would be weak under this circumstance. The spacemen can be on this asteroid with low gravity just for few months. Otherwise, they would suffer from this illness.
Second, the author believes that some asteroids are rich in some valuable and precious metals like gold and platinum. So humans can access this source of metals and benefit. On the contrary, the lecturer explains two main reasons and shows this is not a good idea. First, she thinks that the cost of mining and transporting such metals from a particular asteroid to Earth is as much as excavating the ground of Earth and mining the valuable elements. Furthermore, if the demand for a certain metal would be increased in the market, its price would be decreased. Based on this fact, this idea is not efficient as the author thinks.
Third, because of the short distance between Earth and nearby asteroids, the author thinks that it is easy to reach the nearby asteroids and colonize there. Also, the author believes it can take much less money and time to go to a nearing asteroid and back forth. Despite this, the lecturer implies that the orbiting path of the asteroids not only is not a usual and regular path that is well-known, but also the asteroids might go far even more distant than Mars and Moon. So the cost of going to a certain asteroid would be increased.
Transition Words or Phrases used:
also, but, first, furthermore, if, second, so, therefore, third, well, on the contrary, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 14.0 10.4613686534 134% => OK
Auxiliary verbs: 11.0 5.04856512141 218% => Less auxiliary verb wanted.
Conjunction : 16.0 7.30242825607 219% => Less conjunction wanted
Relative clauses : 8.0 12.0772626932 66% => More relative clauses wanted.
Pronoun: 25.0 22.412803532 112% => OK
Preposition: 33.0 30.3222958057 109% => 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: 1582.0 1373.03311258 115% => OK
No of words: 329.0 270.72406181 122% => OK
Chars per words: 4.8085106383 5.08290768461 95% => OK
Fourth root words length: 4.25891501996 4.04702891845 105% => OK
Word Length SD: 2.40560562145 2.5805825403 93% => OK
Unique words: 168.0 145.348785872 116% => OK
Unique words percentage: 0.510638297872 0.540411800872 94% => More unique words wanted or less content wanted.
syllable_count: 468.9 419.366225166 112% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 3.25607064018 184% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 18.0 13.0662251656 138% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 43.6733455452 49.2860985944 89% => OK
Chars per sentence: 87.8888888889 110.228320801 80% => OK
Words per sentence: 18.2777777778 21.698381199 84% => OK
Discourse Markers: 5.83333333333 7.06452816374 83% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 7.0 4.45695364238 157% => 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: 0.114726960535 0.272083759551 42% => OK
Sentence topic coherence: 0.0387734569582 0.0996497079465 39% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0303092137254 0.0662205650399 46% => Sentences are similar to each other.
Paragraph topic coherence: 0.0761104549471 0.162205337803 47% => OK
Paragraph topic coherence SD: 0.0286299762749 0.0443174109184 65% => OK
Essay readability:
automated_readability_index: 10.4 13.3589403974 78% => Automated_readability_index is low.
flesch_reading_ease: 70.13 53.8541721854 130% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 7.9 11.0289183223 72% => OK
coleman_liau_index: 10.62 12.2367328918 87% => OK
dale_chall_readability_score: 7.65 8.42419426049 91% => OK
difficult_words: 65.0 63.6247240618 102% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 75.0 out of 100
Scores by essay e-grader: 22.5 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.