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 passage suggested various reasons which make the human mission to Mars quite a less possible one to make. However, the lecture contradicted the incent and provided three different reasonings that would otherwise make this mission pretty possible.
The very first thing the reading suggested is that it would require huge amount of supplies of food, beverages and oxygen for the astronauts living in the spaceships for about a two years time travel to Mars from Earth approximately which simply makes the spacecrafts pretty heavier that definitely will hamper the mission. However, the lecture counseled other idea. It proposed to incline towards hydroponics which is an artificial system of cultivating plants that require very less space, can use recycled water and release good amount of oxygen with inhaling carbon dioxide - a perfect match for the crew members to stay well on their journey of two years to Mars.
Second point the passage emphasized on is the negative effect of zero gravity on the bodies of crew members during their mission. The lecture seemed to be dismissive of this idea as it provided its argument by saying that - this is not something new for the astronauts as they already have spent many hours during their other missions when they had to remain without gravity for more than hours. Also, the lecture invoked that the crew members can obviously take some technological advantageous to escape those physical difficulties due to zero gravity, they can intake necessary vitamins and exercise regularly to prevent their muscle from shrinking.
The very las thing the passage implicated upon is the negative effect of solar radiation on the bodies of crew members which are not protected by Earth's magnetic field in the interplanetary space as they are in the Earth. The lecture denied the concept while addressing that the solar radiation from the Sun is not always in the extreme level that would harm the astronauts rather it happens occasionally and proponed that the crew members of the spacecrafts will be fine if they can hide themselves or prevent themselves from those not so frequent radiation by using specially manufactured shield or by any special instrument.
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Grammar and spelling errors:
Line 4, column 10, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'las'' or 'la's'?
Suggestion: las'; la's
... their muscle from shrinking. The very las thing the passage implicated upon is th...
^^^
Transition Words or Phrases used:
also, first, however, if, second, so, well, while
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 : 7.0 7.30242825607 96% => OK
Relative clauses : 14.0 12.0772626932 116% => OK
Pronoun: 30.0 22.412803532 134% => Less pronouns wanted
Preposition: 44.0 30.3222958057 145% => OK
Nominalization: 5.0 5.01324503311 100% => OK
Performance on vocabulary words:
No of characters: 1852.0 1373.03311258 135% => OK
No of words: 360.0 270.72406181 133% => OK
Chars per words: 5.14444444444 5.08290768461 101% => OK
Fourth root words length: 4.35587717469 4.04702891845 108% => OK
Word Length SD: 2.63026367263 2.5805825403 102% => OK
Unique words: 197.0 145.348785872 136% => OK
Unique words percentage: 0.547222222222 0.540411800872 101% => OK
syllable_count: 580.5 419.366225166 138% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 10.0 13.0662251656 77% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 36.0 21.2450331126 169% => The Avg. Sentence Length is relatively long.
Sentence length SD: 105.650177473 49.2860985944 214% => The lengths of sentences changed so frequently.
Chars per sentence: 185.2 110.228320801 168% => OK
Words per sentence: 36.0 21.698381199 166% => OK
Discourse Markers: 4.9 7.06452816374 69% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => 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: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.092111336657 0.272083759551 34% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0389334346486 0.0996497079465 39% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0377621600503 0.0662205650399 57% => OK
Paragraph topic coherence: 0.059141598824 0.162205337803 36% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0212301479669 0.0443174109184 48% => 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: 20.8 13.3589403974 156% => OK
flesch_reading_ease: 34.94 53.8541721854 65% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 17.3 11.0289183223 157% => OK
coleman_liau_index: 13.12 12.2367328918 107% => OK
dale_chall_readability_score: 9.33 8.42419426049 111% => OK
difficult_words: 89.0 63.6247240618 140% => OK
linsear_write_formula: 13.5 10.7273730684 126% => OK
gunning_fog: 16.4 10.498013245 156% => OK
text_standard: 14.0 11.2008830022 125% => 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
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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.