"Manned space flight is costly and dangerous. Moreover, the recent success of a series of unmanned space probes and satellites has demonstrated that a great deal of useful information can be gathered without the costs and risks associated with sending men and women into space. Therefore, we should invest our resources in unmanned space flight."
The opinion states that to prevent exorbitant spending on manned space flight which is also risky should be less practiced instead unmanned resources be sent that is more cheap and also collects decent amount of information too. The opinion is based on few success rates of unmanned missions and vague consideration of the process of collecting information. It is true that space missions are risky be it manned or unmanned it has the equal amount of risks associated with it but completely favouring unmanned resources will not provide every drop of information of the outer surrounding. The letter claims that a series of the unmanned missions have provided with large amount of information at low cost and risk which is not entirely true for every mission.
The main advantage the space aeronaunts get when they launch a manned mission is that they get get proper pristine data about the outer world. There years of studies and research will allow them to bring home informations that a well equipped machined can. Suppose a manned Mission was launched to planet Mars, the scientits will get home the information has what type of soil is found in there, how different the surrounding is from the earth, how old could the groves and the rocks are, the water found is it same as that of earth,etc. These informations will be real and more valuable in studing and bringing into thesis and theories of space. A unmanned mission will only get pictures but not such detailed information.
It is assumed that sending unmanned mission is of low risk and cost, but if we do not want any negligence and compromise in the amount of informations, the probes and the satellites need to be made of high quality and equipment which might cost even more than a manned mission. Sometimes it is possible that the satellite will stop resonding and connection might be lost just like it happened in the recent mission of Chandrayan 2 launched by India. In such scenario, it is not relevant to completely trust and be reliable on these satellites and space probes.
In a space mission, bith amnned and unmanned missions are equally important depending on the goal of the mission, searching signs of life can be best done by manned missions and certain electrical and surrounding information of planets can be entrustred on unmanned probes and satellites.
Therefore, the opinion of completely investing in the unmanned missions wll lead to loss of many various of informations which is not viable for the space study. Both cost and come with equal risks hebnce it is wrong to shun the manned missions and favour only the unmanned missions.
Comments
Essay evaluation report
out of topic
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Attribute Value Ideal
Final score: ??? out of 6
Category: Poor Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 14 15
No. of Words: 447 350
No. of Characters: 2147 1500
No. of Different Words: 210 200
Fourth Root of Number of Words: 4.598 4.7
Average Word Length: 4.803 4.6
Word Length SD: 2.611 2.4
No. of Words greater than 5 chars: 144 100
No. of Words greater than 6 chars: 113 80
No. of Words greater than 7 chars: 86 40
No. of Words greater than 8 chars: 47 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 31.929 21.0
Sentence Length SD: 15.168 7.5
Use of Discourse Markers (%): 0.429 0.12
Sentence-Text Coherence: 0.371 0.35
Sentence-Para Coherence: 0.628 0.50
Sentence-Sentence Coherence: 0.119 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 3, column 92, Rule ID: ENGLISH_WORD_REPEAT_RULE
Message: Possible typo: you repeated a word
Suggestion: get
...ey launch a manned mission is that they get get proper pristine data about the outer wo...
^^^^^^^
Line 3, column 533, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , etc
... water found is it same as that of earth,etc. These informations will be real and mo...
^^^^
Line 3, column 648, Rule ID: EN_A_VS_AN
Message: Use 'An' instead of 'A' if the following word starts with a vowel sound, e.g. 'an article', 'an hour'
Suggestion: An
...ging into thesis and theories of space. A unmanned mission will only get pictures...
^
Transition Words or Phrases used:
also, but, if, so, therefore, well, it is true
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 28.0 19.6327345309 143% => OK
Auxiliary verbs: 14.0 12.9520958084 108% => OK
Conjunction : 25.0 11.1786427146 224% => Less conjunction wanted
Relative clauses : 14.0 13.6137724551 103% => OK
Pronoun: 25.0 28.8173652695 87% => OK
Preposition: 52.0 55.5748502994 94% => OK
Nominalization: 11.0 16.3942115768 67% => OK
Performance on vocabulary words:
No of characters: 2184.0 2260.96107784 97% => OK
No of words: 446.0 441.139720559 101% => OK
Chars per words: 4.89686098655 5.12650576532 96% => OK
Fourth root words length: 4.5955099915 4.56307096286 101% => OK
Word Length SD: 2.67292411347 2.78398813304 96% => OK
Unique words: 216.0 204.123752495 106% => OK
Unique words percentage: 0.484304932735 0.468620217663 103% => OK
syllable_count: 670.5 705.55239521 95% => OK
avg_syllables_per_word: 1.5 1.59920159681 94% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 4.96107784431 81% => OK
Article: 9.0 8.76447105788 103% => OK
Subordination: 0.0 2.70958083832 0% => More adverbial clause wanted.
Conjunction: 1.0 1.67365269461 60% => OK
Preposition: 2.0 4.22255489022 47% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 15.0 19.7664670659 76% => 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: 29.0 22.8473053892 127% => The Avg. Sentence Length is relatively long.
Sentence length SD: 67.7297243133 57.8364921388 117% => OK
Chars per sentence: 145.6 119.503703932 122% => OK
Words per sentence: 29.7333333333 23.324526521 127% => OK
Discourse Markers: 3.06666666667 5.70786347227 54% => More transition words/phrases wanted.
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 3.0 5.25449101796 57% => OK
Sentences with positive sentiment : 8.0 8.20758483034 97% => OK
Sentences with negative sentiment : 6.0 6.88822355289 87% => OK
Sentences with neutral sentiment: 1.0 4.67664670659 21% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.292418799712 0.218282227539 134% => OK
Sentence topic coherence: 0.109618880476 0.0743258471296 147% => OK
Sentence topic coherence SD: 0.0579505941909 0.0701772020484 83% => OK
Paragraph topic coherence: 0.181153031777 0.128457276422 141% => OK
Paragraph topic coherence SD: 0.0506114149477 0.0628817314937 80% => OK
Essay readability:
automated_readability_index: 16.5 14.3799401198 115% => OK
flesch_reading_ease: 50.5 48.3550499002 104% => OK
smog_index: 8.8 7.1628742515 123% => OK
flesch_kincaid_grade: 13.4 12.197005988 110% => OK
coleman_liau_index: 11.73 12.5979740519 93% => OK
dale_chall_readability_score: 8.33 8.32208582834 100% => OK
difficult_words: 92.0 98.500998004 93% => OK
linsear_write_formula: 14.5 12.3882235529 117% => OK
gunning_fog: 13.6 11.1389221557 122% => OK
text_standard: 14.0 11.9071856287 118% => OK
What are above readability scores?
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Rates: 66.67 out of 100
Scores by essay e-grader: 4.0 Out of 6
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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.