Scientists are considering the possibility of sending humans to Mars in the coming decades. Although there have been successful manned missions to the Moon in the 1960s and 1970s, Mars is 150 times further away from Earth than the Moon is. Thus the project of sending humans to Mars would require solving an array of problems the Moon missions did not have to face.
One problem is that a round-trip to Mars and back is likely to take at least two years. The trip to the Moon lasted only a few days, and it was easy to bring enough supplies of food, water, and oxygen; but the cargo capacity of space vehicles is too limited to put on board the food, water, and oxygen required by a crew for a period of two years. Without those essentials, though, a Mars mission is impossible.
A second problem is that astronauts on the Mars mission would be in the zero-gravity environment of space for many months at a time. Spending a long time in the zero-gravity environment has negative effects on the human body, such as decreased muscle mass and lower bone density. Over the course of a two-year mission, the effects would be so severe, they would make it impossible for humans to make the trip without experiencing grave medical problems.
Finally, astronauts on a mission to Mars would be exposed to dangerous levels of space radiation, much of which comes in the form of charged particles emitted by the Sun. Earth's magnetic field, which normally protects us from dangerous solar radiation, would not be able to protect a spaceship traveling in interplanetary space. Constructing a shield that would protect the whole spaceship from space radiation is at present impossible because it would add too much weight to the ship.
The main message of the passage was mars trip is impossible due to several problems compared to trip to moon was. However, the message of the passage was refuted by the speaker. His main claim was though the trip to mars was difficult as compared to moon, it is not much impossible to the extent as mentioned by the writer. The speaker has mentioned several reasons to bolster her stand.
For the first reason, as the passage mentioned that cargo plane need to take much supplies like food and oxygen for the time to be spent. However, the speaker mentioned that due to the facility of hydroponics technique to grow or cultivate food crops in water which has relatively less weight as compared to soil, the load being taken by the space vehicle can be reduced. Also the technique requires relatively less space. He further added that plants use carbondioxide gas and exchange oxygen that enables to reduce oxygen load to be taken.
Secondly, the writer had mentioned that in zero gravity has negative effects in the health of astronauts like as lowering bone density and decreased muscle mass. However, the speaker has refuted the message by mentioning that in many launched vehicles many astronauts have spent there with learning regular exercise techniques. He supported that such regular exercise do not reduce muscle mass and calcium of bone.
For the third reason, the writer has mentioned that there is a dangerous of space radiation exposure inside the spaceship traveling through space. But the speker contradicted the logic by mentioning few stances in this regard. Speaker mentioned that there is dangerous of radiation sometimes not all the time, like ocasionally during the active time of radiation. He further added that there is provision of equipment fitted that protects or shields and protects astronauts. And the equipment is not as much weight, less weight to be carried by the ship. The radiation can be detected and after detection the astronauts can enter inside the small protective shielded area.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2024-01-10 | Shahjahan khandakar | 73 | view |
| 2023-09-08 | joeyrussell007 | 3 | view |
| 2023-07-16 | YasamanEsml | 80 | view |
| 2023-03-14 | sonyeoso | 90 | view |
| 2022-12-15 | subashdevkota | 3 | view |
- Young people today have no influence on the important decisions that determine the future of society as a whole 80
- In the past young people depended too much on their parents to make decisions for them today young people are better able to make decisions about their own lives 85
- It is more important for governments to spend money to improve Internet access than to improve public transportation 95
- Scientists are considering the possibility of sending humans to Mars in the coming decades Although there have been successful manned missions to the Moon in the 1960s and 1970s Mars is 150 times further away from Earth than the Moon is Thus the project o 3
- In the past it was easier to identify what type of career or job would lead to a secure successful future 76
Comments
Essay evaluations by e-grader
Grammar and spelling errors:
Line 1, column 84, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ip is impossible due to several problems compared to trip to moon was. However, t...
^^
Line 2, column 78, Rule ID: MUCH_COUNTABLE[1]
Message: Use 'many' with countable nouns.
Suggestion: many
...mentioned that cargo plane need to take much supplies like food and oxygen for the t...
^^^^
Line 2, column 372, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Also,
...en by the space vehicle can be reduced. Also the technique requires relatively less ...
^^^^
Transition Words or Phrases used:
also, but, first, however, if, second, secondly, so, third
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 17.0 10.4613686534 163% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 10.0 7.30242825607 137% => OK
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 18.0 22.412803532 80% => OK
Preposition: 44.0 30.3222958057 145% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1688.0 1373.03311258 123% => OK
No of words: 336.0 270.72406181 124% => OK
Chars per words: 5.02380952381 5.08290768461 99% => OK
Fourth root words length: 4.28139028586 4.04702891845 106% => OK
Word Length SD: 2.56463360376 2.5805825403 99% => OK
Unique words: 164.0 145.348785872 113% => OK
Unique words percentage: 0.488095238095 0.540411800872 90% => More unique words wanted or less content wanted.
syllable_count: 531.0 419.366225166 127% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 44.9189196504 49.2860985944 91% => OK
Chars per sentence: 99.2941176471 110.228320801 90% => OK
Words per sentence: 19.7647058824 21.698381199 91% => OK
Discourse Markers: 3.41176470588 7.06452816374 48% => More transition words/phrases wanted.
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0595502128905 0.272083759551 22% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0191500351092 0.0996497079465 19% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0302011774687 0.0662205650399 46% => Sentences are similar to each other.
Paragraph topic coherence: 0.0349063456173 0.162205337803 22% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0282482549007 0.0443174109184 64% => OK
Essay readability:
automated_readability_index: 12.1 13.3589403974 91% => Automated_readability_index is low.
flesch_reading_ease: 52.19 53.8541721854 97% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.7 11.0289183223 97% => OK
coleman_liau_index: 11.84 12.2367328918 97% => OK
dale_chall_readability_score: 8.06 8.42419426049 96% => OK
difficult_words: 74.0 63.6247240618 116% => OK
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
---------------------
Write the essay in 20 minutes.
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.
Grammar and spelling errors:
Line 1, column 84, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ip is impossible due to several problems compared to trip to moon was. However, t...
^^
Line 2, column 78, Rule ID: MUCH_COUNTABLE[1]
Message: Use 'many' with countable nouns.
Suggestion: many
...mentioned that cargo plane need to take much supplies like food and oxygen for the t...
^^^^
Line 2, column 372, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Also,
...en by the space vehicle can be reduced. Also the technique requires relatively less ...
^^^^
Transition Words or Phrases used:
also, but, first, however, if, second, secondly, so, third
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 17.0 10.4613686534 163% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 10.0 7.30242825607 137% => OK
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 18.0 22.412803532 80% => OK
Preposition: 44.0 30.3222958057 145% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1688.0 1373.03311258 123% => OK
No of words: 336.0 270.72406181 124% => OK
Chars per words: 5.02380952381 5.08290768461 99% => OK
Fourth root words length: 4.28139028586 4.04702891845 106% => OK
Word Length SD: 2.56463360376 2.5805825403 99% => OK
Unique words: 164.0 145.348785872 113% => OK
Unique words percentage: 0.488095238095 0.540411800872 90% => More unique words wanted or less content wanted.
syllable_count: 531.0 419.366225166 127% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 44.9189196504 49.2860985944 91% => OK
Chars per sentence: 99.2941176471 110.228320801 90% => OK
Words per sentence: 19.7647058824 21.698381199 91% => OK
Discourse Markers: 3.41176470588 7.06452816374 48% => More transition words/phrases wanted.
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0595502128905 0.272083759551 22% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0191500351092 0.0996497079465 19% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0302011774687 0.0662205650399 46% => Sentences are similar to each other.
Paragraph topic coherence: 0.0349063456173 0.162205337803 22% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0282482549007 0.0443174109184 64% => OK
Essay readability:
automated_readability_index: 12.1 13.3589403974 91% => Automated_readability_index is low.
flesch_reading_ease: 52.19 53.8541721854 97% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.7 11.0289183223 97% => OK
coleman_liau_index: 11.84 12.2367328918 97% => OK
dale_chall_readability_score: 8.06 8.42419426049 96% => OK
difficult_words: 74.0 63.6247240618 116% => OK
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
---------------------
Write the essay in 20 minutes.
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.