Many scientists believe it would be possible to maintain a permanent human presence on Mars or the Moon. On the other hand, conditions on Venus are so extreme and inhospitable that maintaining a human presence there would be impossible.
First, atmospheric pressure at Venus’ surface is at least 90 times greater than the pressure at Earth’s surface. This means that a force of 100 kilograms is pressing down on every square centimeter of surface. All spacecraft that have landed on Venus have been crushed by this extreme pressure within an hour of landing. Almost anything humans might land on Venus would be crushed as well.
Second, as far as we know, there are no reservoirs of water on Venus’ surface, and the planet’s atmosphere, made up mostly of carbon dioxide, nitrogen, and sulfuric acid, contains hardly any oxygen or water vapor. Water and oxygen would therefore probably have to be supplied to Venus from Earth. The idea of ensuring a regular supply of water and oxygen from Earth is impractical in the extreme and would probably defeat the purpose of establishing a permanent station on Venus.
Third, very little sunlight reaches the planet’s surface. About 60 percent of the sunlight that hits Venus is reflected back into space by the thick clouds that fill the atmosphere, which means that only 40 percent of the sunlight can get through the clouds. Below these clouds is a dense layer of carbon dioxide, which blocks even more light, so very little light reaches the surface. The lack of light would prevent the use of solar power cells, so humans could not get electricity to power their machines and equipment.
There is constant drumbeat over whether it is possible to live on Venus. While in the reading passage, the author pointed out that there are three main reasons why it would be impossible, the lecturer hold an opposite viewpoints and refuted each of them. In the lecture, the speaker claimed that these could be solved by putting up a balloon-like station on the planet.
First of all, the lecturer argued that since the station could flow around the planet, the problem of pressure could be solved. Although Venus has the atmosphere pressure much greater than the one at Earth, by putting up the station around 50 kilometers high, it would lower the pressure to an earth-like one.
Secondly, in the reading passage, the author claimed that the need to reserve water on the planet would at the end defeating the hope to establish the station. On the contrary, the lecturer refuted this by pointing out that water can be made out of carbon dioxide and sulfur dioxide, which are attainable on Venus. Thus, there should be no worries about transporting water and reserve them.
Last but not the least, the author indicated very little sunlight due to the think cloud block on the planet would lead to no electricity to power their machine. However, the lecturer refused this by saying that there would also be reflective light available above the thick cloud. As a result, they can gain electricity through solar system.
Grammar and spelling errors:
Line 7, column 74, Rule ID: A_INFINITVE[1]
Message: Probably a wrong construction: a/the + infinitive
...r indicated very little sunlight due to the think cloud block on the planet would lead to...
^^^^^^^^^
Transition Words or Phrases used:
also, but, first, however, second, secondly, so, thus, while, as a result, first of all, on the contrary
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 12.0 5.04856512141 238% => Less auxiliary verb wanted.
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 7.0 12.0772626932 58% => More relative clauses wanted.
Pronoun: 16.0 22.412803532 71% => OK
Preposition: 40.0 30.3222958057 132% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1186.0 1373.03311258 86% => OK
No of words: 242.0 270.72406181 89% => More content wanted.
Chars per words: 4.90082644628 5.08290768461 96% => OK
Fourth root words length: 3.94415379849 4.04702891845 97% => OK
Word Length SD: 2.4172529469 2.5805825403 94% => OK
Unique words: 139.0 145.348785872 96% => OK
Unique words percentage: 0.574380165289 0.540411800872 106% => OK
syllable_count: 357.3 419.366225166 85% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 11.0 13.0662251656 84% => 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: 22.0 21.2450331126 104% => OK
Sentence length SD: 41.7663710665 49.2860985944 85% => OK
Chars per sentence: 107.818181818 110.228320801 98% => OK
Words per sentence: 22.0 21.698381199 101% => OK
Discourse Markers: 9.45454545455 7.06452816374 134% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => 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: 0.1467308844 0.272083759551 54% => OK
Sentence topic coherence: 0.0556613766231 0.0996497079465 56% => OK
Sentence topic coherence SD: 0.0233793539722 0.0662205650399 35% => Sentences are similar to each other.
Paragraph topic coherence: 0.0899213652513 0.162205337803 55% => OK
Paragraph topic coherence SD: 0.0130658626857 0.0443174109184 29% => 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: 12.6 13.3589403974 94% => Automated_readability_index is low.
flesch_reading_ease: 57.61 53.8541721854 107% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.7 11.0289183223 97% => OK
coleman_liau_index: 11.14 12.2367328918 91% => OK
dale_chall_readability_score: 8.25 8.42419426049 98% => OK
difficult_words: 54.0 63.6247240618 85% => More difficult words wanted.
linsear_write_formula: 9.0 10.7273730684 84% => OK
gunning_fog: 10.8 10.498013245 103% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
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Rates: 70.0 out of 100
Scores by essay e-grader: 21.0 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.