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.
Presence of human on Venus plant seem to be a bit challenging for scientists. While the instructor believe of the possibility to make this happened. The article, however, argues the problems that are associated with this aspect.
First issue concerns with the atmospheric pressure. The professor suggests that space craft can be float by balloon 50 kg above Venus surface. This pressure is the same as the pressure on Earth, and this will prevent the crushing of the spaceship. However, the reading passage assumes that Venus pressure is 90 times higher than on earth. Furthermore, the pressure that the spaceship put on Venus is about 100 kg/square meters, that will lead to crush once the spaceship lands.
Second problem is associated with the availability of water and oxygen. The instructor mentions that Venus plant have both sulfuric acid and carbon dioxide. Both of these chemicals can be used by the spaceship to produce water and thus oxygen. In contrast the article states that there is no reservoir for water and oxygen, thus, no permanent presence of human can occur on this plant.
The last subject of concern is about the presence of sunlight. The speaker says that the spaceship can use a solar power to collect sun light that reach to the plant, as well as, it make use of the reflected light from the clouds that prevent some part of the light reaching plant surface. while the reading cast doubt this by stating that 60% of the sunlight will be reflected from the clouds, and the other 40% will be absorbed by the chemicals found in the space. So, only small amount of sunlight will reach the plant, and thus no light lead to no electricity used by spaceship.
Grammar and spelling errors:
Line 1, column 79, Rule ID: SENTENCE_FRAGMENT[1]
Message: “While” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...to be a bit challenging for scientists. While the instructor believe of the possibili...
^^^^^
Line 3, column 247, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[2]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: contrast,
...ip to produce water and thus oxygen. In contrast the article states that there is no res...
^^^^^^^^
Line 4, column 182, Rule ID: IT_VBZ[1]
Message: Did you mean 'makes'?
Suggestion: makes
...that reach to the plant, as well as, it make use of the reflected light from the clo...
^^^^
Line 4, column 290, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: While
...rt of the light reaching plant surface. while the reading cast doubt this by stating ...
^^^^^
Transition Words or Phrases used:
first, furthermore, however, second, so, thus, well, while, in contrast, as well as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 10.4613686534 115% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 19.0 22.412803532 85% => OK
Preposition: 39.0 30.3222958057 129% => OK
Nominalization: 3.0 5.01324503311 60% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1392.0 1373.03311258 101% => OK
No of words: 290.0 270.72406181 107% => OK
Chars per words: 4.8 5.08290768461 94% => OK
Fourth root words length: 4.12666770723 4.04702891845 102% => OK
Word Length SD: 2.45643129291 2.5805825403 95% => OK
Unique words: 145.0 145.348785872 100% => OK
Unique words percentage: 0.5 0.540411800872 93% => More unique words wanted or less content wanted.
syllable_count: 414.9 419.366225166 99% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 3.0 1.51434878587 198% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 16.0 13.0662251656 122% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 44.7220583158 49.2860985944 91% => OK
Chars per sentence: 87.0 110.228320801 79% => OK
Words per sentence: 18.125 21.698381199 84% => OK
Discourse Markers: 5.1875 7.06452816374 73% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 9.0 4.45695364238 202% => Less negative sentences wanted.
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: 0.145115202803 0.272083759551 53% => OK
Sentence topic coherence: 0.0537777775542 0.0996497079465 54% => OK
Sentence topic coherence SD: 0.0562640703813 0.0662205650399 85% => OK
Paragraph topic coherence: 0.098790396332 0.162205337803 61% => OK
Paragraph topic coherence SD: 0.0428955209579 0.0443174109184 97% => OK
Essay readability:
automated_readability_index: 10.2 13.3589403974 76% => Automated_readability_index is low.
flesch_reading_ease: 70.13 53.8541721854 130% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 7.9 11.0289183223 72% => OK
coleman_liau_index: 10.26 12.2367328918 84% => OK
dale_chall_readability_score: 7.8 8.42419426049 93% => OK
difficult_words: 60.0 63.6247240618 94% => OK
linsear_write_formula: 5.5 10.7273730684 51% => Linsear_write_formula is low.
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
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Rates: 78.3333333333 out of 100
Scores by essay e-grader: 23.5 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.