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 article and the lecture are both discuss that whether asteroids are good colonies for humans. The article use three reasons to support that asteroids are good colonies. However, the lecturer does not agree with that.
According to the article, low gravity can let the landing and taking off of the spaceships easier. Moreover, it says that a spacecraft can carry much more equipment needed to set up the colony. Nevertheless, the lecturer addresses some concern. He says that low gravity may also cause some risks. For example, people may lose their muscle mass and their bone density may also decrease. Therefore, low gravity may lead to serious health problems for humans.
Secondly, the article believes that asteroids may be rich in valuable elements and precious metals that can send them back to Earth and make a big fortune. However, the lecturer does not agree the idea. He thinks that there may be some additional factors that stop them from profiting. For instance, the cost for sending those metals back to Earth may be so high that reduce the profits. Also, when the mining being popular, the quantity of the precious metals will rise, and the price will finally fell. Thus, mining those metals may not make people much money.
Thirdly, the article suggests that asteroids are easier to reach from Earth than other planets. Nonetheless, the lecturer still got some issue on that thought. He says that easy to arrive does not mean easy to return. To be more specific, the orbit of the asteroids may be unusual. When an asteroid is near to the Earth at one time, it may no longer stay close to Earth later, and that would be a challenge for humans to return to Earth.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2023-09-09 | xujia | 75 | view |
| 2023-07-18 | YasamanEsml | 32 | view |
| 2023-07-18 | YasamanEsml | 3 | view |
| 2023-07-18 | YasamanEsml | 3 | view |
| 2023-07-18 | YasamanEsml | 3 | view |
- 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 3
- In recent years many frog species around the world have declined in numbers or even gone extinct due to changes in their environment These population declines and extinctions have serious consequences for the ecosystems in which frogs live for example fro 81
- The Salton Sea in California is actually a salty inland lake The level of salt in the lake s water what scientists call its salinity has been increasing steadily for years because the lake s water is evaporating faster than it is being replaced by rainfal 85
- In the United States medical information about patients traditionally has been recorded and stored on paper forms However there are efforts to persuade doctors to adopt electronic medical record systems in which information about patients is stored in ele 78
- Do you agree or disagree with the following statement It is more important for governments to spend money to improve Internet access than to improve public transportation Use specific reasons and examples to support your answer 60
Grammar and spelling errors:
Line 5, column 300, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... stop them from profiting. For instance, the cost for sending those metals back t...
^^
Line 7, column 50, Rule ID: MOST_COMPARATIVE[2]
Message: Use only 'easier' (without 'more') when you use the comparative.
Suggestion: easier
...the article suggests that asteroids are more easier to reach from Earth than other planets....
^^^^^^^^^^^
Transition Words or Phrases used:
also, finally, however, if, may, moreover, nevertheless, nonetheless, second, secondly, so, still, therefore, third, thirdly, thus, for example, for instance, talking about
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 10.4613686534 115% => OK
Auxiliary verbs: 16.0 5.04856512141 317% => Less auxiliary verb wanted.
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 15.0 12.0772626932 124% => OK
Pronoun: 24.0 22.412803532 107% => OK
Preposition: 26.0 30.3222958057 86% => OK
Nominalization: 2.0 5.01324503311 40% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1399.0 1373.03311258 102% => OK
No of words: 291.0 270.72406181 107% => OK
Chars per words: 4.80756013746 5.08290768461 95% => OK
Fourth root words length: 4.13022058845 4.04702891845 102% => OK
Word Length SD: 2.27651234852 2.5805825403 88% => OK
Unique words: 158.0 145.348785872 109% => OK
Unique words percentage: 0.54295532646 0.540411800872 100% => OK
syllable_count: 425.7 419.366225166 102% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 11.0 8.23620309051 134% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 20.0 13.0662251656 153% => OK
Sentence length: 14.0 21.2450331126 66% => The Avg. Sentence Length is relatively short.
Sentence length SD: 31.4029855269 49.2860985944 64% => OK
Chars per sentence: 69.95 110.228320801 63% => OK
Words per sentence: 14.55 21.698381199 67% => OK
Discourse Markers: 8.6 7.06452816374 122% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 9.0 4.33554083885 208% => Less positive sentences wanted.
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: 0.0801010271908 0.272083759551 29% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0290784542164 0.0996497079465 29% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0351441721074 0.0662205650399 53% => OK
Paragraph topic coherence: 0.0590488167527 0.162205337803 36% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0355126510828 0.0443174109184 80% => OK
Essay readability:
automated_readability_index: 8.5 13.3589403974 64% => Automated_readability_index is low.
flesch_reading_ease: 65.73 53.8541721854 122% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 7.6 11.0289183223 69% => OK
coleman_liau_index: 10.03 12.2367328918 82% => OK
dale_chall_readability_score: 7.97 8.42419426049 95% => OK
difficult_words: 67.0 63.6247240618 105% => OK
linsear_write_formula: 5.5 10.7273730684 51% => Linsear_write_formula is low.
gunning_fog: 7.6 10.498013245 72% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
---------------------
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
---------------------
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.