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 reading and lecture both talk about the possibility of sending humans to Mars. The passage states that the process of sending a human to the space required to solve some sort of problems. The lecturer casts doubt on the claim made in the article.
First, the written text claims that a round trip to Mars and back takes at least two years. In addition, without some kinds of essential factors, the mission is impossible. In contrast, the orator opposes saying that food, water, and oxygen are the necessary elements for the mission but Hydroponics is more important rather than water. Besides, by using this factor, astronomers could recycle wastewater and having fresh air.
Second, from the author's point of view, astronauts facing zero gravity that has negative on the human body such as bone density and muscle mass. The monologue rebuts the claiming that zero gravity does not have many negative effects, but the astronauts should do some regular exercises to provide Calcium and muscle mass.
Lastly, the passage advocates the levels of space radiation exposed by astronauts. Moreover, it states that providing a shield to protect from radiation could not be effective because of the weight. Conversely, the audio lesson challenges that the solar radiation will not be at danger level all the time. Besides, spaceships should be equipped with a special shield surrounded by the shielded areas.
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Grammar and spelling errors:
Line 1, column 193, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...equired to solve some sort of problems. The lecturer casts doubt on the claim made ...
^^^
Transition Words or Phrases used:
besides, but, conversely, first, lastly, moreover, second, so, at least, in addition, in contrast, sort of, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 10.4613686534 57% => More to be verbs wanted.
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 8.0 7.30242825607 110% => OK
Relative clauses : 7.0 12.0772626932 58% => More relative clauses wanted.
Pronoun: 9.0 22.412803532 40% => OK
Preposition: 29.0 30.3222958057 96% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1183.0 1373.03311258 86% => OK
No of words: 230.0 270.72406181 85% => More content wanted.
Chars per words: 5.14347826087 5.08290768461 101% => OK
Fourth root words length: 3.89432290496 4.04702891845 96% => OK
Word Length SD: 2.46636734164 2.5805825403 96% => OK
Unique words: 148.0 145.348785872 102% => OK
Unique words percentage: 0.64347826087 0.540411800872 119% => OK
syllable_count: 360.0 419.366225166 86% => 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: 9.0 8.23620309051 109% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 5.0 2.5761589404 194% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 17.0 21.2450331126 80% => The Avg. Sentence Length is relatively short.
Sentence length SD: 33.3516320582 49.2860985944 68% => OK
Chars per sentence: 91.0 110.228320801 83% => OK
Words per sentence: 17.6923076923 21.698381199 82% => OK
Discourse Markers: 8.84615384615 7.06452816374 125% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.107021730074 0.272083759551 39% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0331921824729 0.0996497079465 33% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0267364167343 0.0662205650399 40% => Sentences are similar to each other.
Paragraph topic coherence: 0.0577103527198 0.162205337803 36% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0270917726791 0.0443174109184 61% => OK
Essay readability:
automated_readability_index: 11.6 13.3589403974 87% => 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: 12.24 12.2367328918 100% => OK
dale_chall_readability_score: 9.15 8.42419426049 109% => OK
difficult_words: 68.0 63.6247240618 107% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 8.8 10.498013245 84% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
---------------------
Rates: 78.3333333333 out of 100
Scores by essay e-grader: 23.5 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.