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.
Both the reading passage and the lecture discuss the posibility of sucssecful mission to Mars, like the Moon trip. While the reading brings three problems for this trip, the professor finds them unconvincing and knows the trip is challenging but there are some solutions for the problems.
First, the writer asserts that the Mars trip may take two years. Limmiting space of the cargo, it's can't be possible to carry the necessit of the trip like food, water, and etc. Still, the lecturer says that the astronauts can use hider ponic technique in which they can grow plants by using little source of water. Then they can have foods. Also, the plants can absorb CO2 and release Oxygen so the astronomers can breath freshly air.
Second, the author declares that the long trip expose the astronauts to zero gravity for month that will be harmful for their bodies. On the other hand, the professor explains that asronauts used to be in such condition when they are in the orbits around Earth. Besides, they can use some drugs to be healthy in their trip.
Finally, the writer believes that astronauts susecpteble to be hurt from Sun charged radiation. In contrast, The lectrurer says that Sun's charged particle emission is predictable. So they can be in shelter to gaurd themselves.
Grammar and spelling errors:
Line 3, column 100, Rule ID: CANT[1]
Message: Did you mean 'can't' or 'cannot'?
Suggestion: can't; cannot
...ears. Limmiting space of the cargo, its cant be possible to carry the necessit of th...
^^^^
Line 3, column 169, Rule ID: AND_ETC[1]
Message: Use simply 'etc.'.
Suggestion: etc.
... necessit of the trip like food, water, and etc. Still, the lecturer says that the astro...
^^^^^^^^
Line 3, column 416, Rule ID: BREATHE_BREATH[1]
Message: Did you mean 'breathe'? 'breath' is a noun.
Suggestion: breathe
...d release Oxygen so the astronomers can breath freshly air. Second, the author decl...
^^^^^^
Transition Words or Phrases used:
also, besides, but, finally, first, may, second, so, still, then, while, in contrast, 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: 9.0 5.04856512141 178% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 18.0 22.412803532 80% => OK
Preposition: 23.0 30.3222958057 76% => 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: 1069.0 1373.03311258 78% => OK
No of words: 218.0 270.72406181 81% => More content wanted.
Chars per words: 4.90366972477 5.08290768461 96% => OK
Fourth root words length: 3.84250218741 4.04702891845 95% => OK
Word Length SD: 2.38497262804 2.5805825403 92% => OK
Unique words: 134.0 145.348785872 92% => More unique words wanted.
Unique words percentage: 0.614678899083 0.540411800872 114% => OK
syllable_count: 308.7 419.366225166 74% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 16.0 21.2450331126 75% => The Avg. Sentence Length is relatively short.
Sentence length SD: 39.6551704621 49.2860985944 80% => OK
Chars per sentence: 82.2307692308 110.228320801 75% => OK
Words per sentence: 16.7692307692 21.698381199 77% => OK
Discourse Markers: 7.92307692308 7.06452816374 112% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => 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: 0.048601666149 0.272083759551 18% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0205358171753 0.0996497079465 21% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0269012620807 0.0662205650399 41% => Sentences are similar to each other.
Paragraph topic coherence: 0.0281042011394 0.162205337803 17% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0142154707158 0.0443174109184 32% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 10.0 13.3589403974 75% => Automated_readability_index is low.
flesch_reading_ease: 72.16 53.8541721854 134% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 7.2 11.0289183223 65% => OK
coleman_liau_index: 10.84 12.2367328918 89% => OK
dale_chall_readability_score: 8.49 8.42419426049 101% => OK
difficult_words: 56.0 63.6247240618 88% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 8.4 10.498013245 80% => OK
text_standard: 11.0 11.2008830022 98% => 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
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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.