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 author of the letter states that manned space visiting program is costly, dangerous and unnecessary. Whereas, the recent success of unmanned space missions proves that it is better to invest more resources in this which could be less dangerous than sending a human to space. I agree with the author, because the cost that is mentioned in his letter is not just in the monetary sense but also the precious life of a human being which is at potential risk in such missions.
As the author stated in his letter that space mission that involve sending human to space is costly. Yes, it involves more advanced and cumbersome ways to develop a highly protected and safe space-rocket. Many people, department and technology will be involved. More resources will be required and additional cost of human training is also included. But the most important factor is the cost of a human life. The risk that involves the potential loss of a human life is uncompensated.
On the other hand, the cost of initiating, developing, and launching a unmanned space vehicle could be equally costly as a man containing mission but the result can be achieved without the sake of any human life. Moreover, due to the advancement of technology and AI it is so easy to achieve a desirable task with the help of a robot, which can be controlled and governed by the human from the earth. The space organizations should focus on developing more such man-made intelligent robot and send them to space for research and exploration. Also, the cost of developing a robot in the advanced technical era is comparably lower than training and developing a human and their family (psychologically and physiologically) for space visits. Also, the failure of unmanned space mission are bearable than the manned missions.
There may be possibilities that due to political interest, space research organizations or centres of various countries in the world are eager to send their man to space. Establishing their countries presence and dominance in space could merely be their interests or main motive of such missions rather than actual science research and advancement. But they need to understand that such missions could be perilous and hence unnecessary to be achieved on the sake of their people's lives.
Therefore, all the international space organisations should consider the fact that unmanned missions are more logical and safer to be continue for any spatial experiment than the manned space missions. Therefore the more focus, energy and resources should be involved in unmanned space missions and they should consider the abolishment of manned missions.
Comments
Essay evaluation report
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: 19 15
No. of Words: 433 350
No. of Characters: 2158 1500
No. of Different Words: 187 200
Fourth Root of Number of Words: 4.562 4.7
Average Word Length: 4.984 4.6
Word Length SD: 2.79 2.4
No. of Words greater than 5 chars: 150 100
No. of Words greater than 6 chars: 116 80
No. of Words greater than 7 chars: 95 40
No. of Words greater than 8 chars: 52 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 22.789 21.0
Sentence Length SD: 8.959 7.5
Use of Discourse Markers (%): 0.632 0.12
Sentence-Text Coherence: 0.349 0.35
Sentence-Para Coherence: 0.563 0.50
Sentence-Sentence Coherence: 0.131 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 5, column 1, Rule ID: SENTENCE_FRAGMENT[1]
Message: “As” 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.
... potential risk in such missions. As the author stated in his letter that sp...
^^
Line 9, column 70, 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
...f initiating, developing, and launching a unmanned space vehicle could be equally...
^
Line 17, column 203, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Therefore,
...eriment than the manned space missions. Therefore the more focus, energy and resources sh...
^^^^^^^^^
Transition Words or Phrases used:
also, but, hence, if, may, moreover, so, therefore, whereas, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 27.0 19.6327345309 138% => OK
Auxiliary verbs: 14.0 12.9520958084 108% => OK
Conjunction : 25.0 11.1786427146 224% => Less conjunction wanted
Relative clauses : 12.0 13.6137724551 88% => OK
Pronoun: 24.0 28.8173652695 83% => OK
Preposition: 47.0 55.5748502994 85% => OK
Nominalization: 9.0 16.3942115768 55% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 2218.0 2260.96107784 98% => OK
No of words: 433.0 441.139720559 98% => OK
Chars per words: 5.12240184758 5.12650576532 100% => OK
Fourth root words length: 4.56165014514 4.56307096286 100% => OK
Word Length SD: 2.85946376499 2.78398813304 103% => OK
Unique words: 195.0 204.123752495 96% => OK
Unique words percentage: 0.450346420323 0.468620217663 96% => OK
syllable_count: 699.3 705.55239521 99% => OK
avg_syllables_per_word: 1.6 1.59920159681 100% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 4.96107784431 40% => OK
Article: 7.0 8.76447105788 80% => OK
Subordination: 2.0 2.70958083832 74% => OK
Conjunction: 3.0 1.67365269461 179% => OK
Preposition: 1.0 4.22255489022 24% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 19.0 19.7664670659 96% => OK
Sentence length: 22.0 22.8473053892 96% => OK
Sentence length SD: 50.775973117 57.8364921388 88% => OK
Chars per sentence: 116.736842105 119.503703932 98% => OK
Words per sentence: 22.7894736842 23.324526521 98% => OK
Discourse Markers: 4.10526315789 5.70786347227 72% => OK
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 3.0 5.25449101796 57% => OK
Sentences with positive sentiment : 11.0 8.20758483034 134% => OK
Sentences with negative sentiment : 5.0 6.88822355289 73% => OK
Sentences with neutral sentiment: 3.0 4.67664670659 64% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.298664942744 0.218282227539 137% => OK
Sentence topic coherence: 0.108440504475 0.0743258471296 146% => OK
Sentence topic coherence SD: 0.0559655802042 0.0701772020484 80% => OK
Paragraph topic coherence: 0.185167326229 0.128457276422 144% => OK
Paragraph topic coherence SD: 0.0534460289597 0.0628817314937 85% => OK
Essay readability:
automated_readability_index: 14.1 14.3799401198 98% => OK
flesch_reading_ease: 49.15 48.3550499002 102% => OK
smog_index: 8.8 7.1628742515 123% => OK
flesch_kincaid_grade: 11.9 12.197005988 98% => OK
coleman_liau_index: 12.71 12.5979740519 101% => OK
dale_chall_readability_score: 8.74 8.32208582834 105% => OK
difficult_words: 110.0 98.500998004 112% => OK
linsear_write_formula: 13.0 12.3882235529 105% => OK
gunning_fog: 10.8 11.1389221557 97% => OK
text_standard: 13.0 11.9071856287 109% => OK
What are above readability scores?
---------------------
Rates: 66.67 out of 100
Scores by essay e-grader: 4.0 Out of 6
---------------------
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.