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 argument states that unmanned spaceflights should be preffered over the manned ones because of economical factors involved in space exploration. The argument assumes that all objectives that can be achieved by a manned spaceflight can also be achieved by using an unmanned vehicle. The argument does not consider that symbolic and psycological factors associated with space flight, manned or unmanned. We need to analyze all these factors before arriving to a conclusion.
Humanity's curiocity for space, the universe and our own existence, since thousands of years compelled us to delevope the technology which led us to our first manned space flight in the second half of 20th century. The cold war led to many advancements in rocket and aerospace technology and then, the space race began, which resulted in the first moon landing. This had many social and psycological implication for humans all around the globe. It would be fair to say that 'A small step on the moon, a big step for humanity'.
In the 21st century, the humanity's pursuit for space travel and curiocity to uncover the the unknown 'facts' about our own creation and that of our universe led us to have many space programs over the years. Many of those are unmanned projects. The most well known are the European Space Agency's Cassini and NASA's Voyger Space crafts. Manned and Unmanned space programmes generally have very different objectives; manned programs are mostly symbolic in nature, in some cases involve final stage research to conclude a project involving previously sent unmanned space crafts. One such example is the planned Mars mission, the main objective of the mission is to demonstrate the possibility of terraforming Mars and even a possibility of future human settlement,i.e. colonization.
The unmanned space crafts are generally employed in situations where it is not possible or feasible to have human space flights, i.e. the factors like health risk, psycological effects of isolation and very limited human interaction are considered. It is true that human spaceflight are comparatively very expensive but are also an important technology to master, if we, humans plan to colonoze other worlds and start our voyage in this universe.
The choice between human space flight and an unmanned space exploration mission should be based purely on the mission objectives and human space flights should be developed based on our hunger to wander around this universe. Therefore, it would not be appropriate to invest all of our resources only in unmanned space space flights, as the manned missions are equally or in some cases even more important in the long run, if we humans, plan to travel to and colonize other worlds.
Comments
e-rater score 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: 17 15
No. of Words: 442 350
No. of Characters: 2232 1500
No. of Different Words: 213 200
Fourth Root of Number of Words: 4.585 4.7
Average Word Length: 5.05 4.6
Word Length SD: 2.67 2.4
No. of Words greater than 5 chars: 166 100
No. of Words greater than 6 chars: 123 80
No. of Words greater than 7 chars: 93 40
No. of Words greater than 8 chars: 53 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 26 21.0
Sentence Length SD: 11.061 7.5
Use of Discourse Markers (%): 0.412 0.12
Sentence-Text Coherence: 0.344 0.35
Sentence-Para Coherence: 0.572 0.50
Sentence-Sentence Coherence: 0.138 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 1, column 100, Rule ID: ECONOMICAL_ECONOMIC[1]
Message: Did you mean 'economic' (=connected with economy)?
Suggestion: economic
...effered over the manned ones because of economical factors involved in space exploration. ...
^^^^^^^^^^
Line 1, column 287, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
... achieved by using an unmanned vehicle. The argument does not consider that symboli...
^^^
Line 5, column 86, Rule ID: ENGLISH_WORD_REPEAT_RULE
Message: Possible typo: you repeated a word
Suggestion: the
...r space travel and curiocity to uncover the the unknown facts about our own creation an...
^^^^^^^
Line 5, column 86, Rule ID: DT_DT[1]
Message: Maybe you need to remove one determiner so that only 'the' or 'the' is left.
Suggestion: the; the
...r space travel and curiocity to uncover the the unknown facts about our own creation an...
^^^^^^^
Line 5, column 758, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , i
...a possibility of future human settlement,i.e. colonization. The unmanned space...
^^
Line 9, column 313, Rule ID: ENGLISH_WORD_REPEAT_RULE
Message: Possible typo: you repeated a word
Suggestion: space
...t all of our resources only in unmanned space space flights, as the manned missions are equ...
^^^^^^^^^^^
Transition Words or Phrases used:
also, but, first, if, second, so, then, therefore, well, in some cases, it is true
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 19.0 19.6327345309 97% => OK
Auxiliary verbs: 8.0 12.9520958084 62% => OK
Conjunction : 19.0 11.1786427146 170% => OK
Relative clauses : 10.0 13.6137724551 73% => More relative clauses wanted.
Pronoun: 29.0 28.8173652695 101% => OK
Preposition: 54.0 55.5748502994 97% => OK
Nominalization: 11.0 16.3942115768 67% => OK
Performance on vocabulary words:
No of characters: 2282.0 2260.96107784 101% => OK
No of words: 441.0 441.139720559 100% => OK
Chars per words: 5.1746031746 5.12650576532 101% => OK
Fourth root words length: 4.58257569496 4.56307096286 100% => OK
Word Length SD: 2.7590734979 2.78398813304 99% => OK
Unique words: 217.0 204.123752495 106% => OK
Unique words percentage: 0.492063492063 0.468620217663 105% => OK
syllable_count: 737.1 705.55239521 104% => OK
avg_syllables_per_word: 1.7 1.59920159681 106% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 4.96107784431 101% => OK
Article: 13.0 8.76447105788 148% => OK
Subordination: 4.0 2.70958083832 148% => OK
Conjunction: 0.0 1.67365269461 0% => OK
Preposition: 3.0 4.22255489022 71% => OK
Performance on sentences:
How many sentences: 17.0 19.7664670659 86% => OK
Sentence length: 25.0 22.8473053892 109% => OK
Sentence length SD: 68.1856310143 57.8364921388 118% => OK
Chars per sentence: 134.235294118 119.503703932 112% => OK
Words per sentence: 25.9411764706 23.324526521 111% => OK
Discourse Markers: 4.82352941176 5.70786347227 85% => OK
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 6.0 5.25449101796 114% => OK
Sentences with positive sentiment : 6.0 8.20758483034 73% => OK
Sentences with negative sentiment : 6.0 6.88822355289 87% => OK
Sentences with neutral sentiment: 5.0 4.67664670659 107% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.244233330542 0.218282227539 112% => OK
Sentence topic coherence: 0.0864084367857 0.0743258471296 116% => OK
Sentence topic coherence SD: 0.061878887496 0.0701772020484 88% => OK
Paragraph topic coherence: 0.148374261707 0.128457276422 116% => OK
Paragraph topic coherence SD: 0.055499924814 0.0628817314937 88% => OK
Essay readability:
automated_readability_index: 15.9 14.3799401198 111% => OK
flesch_reading_ease: 37.64 48.3550499002 78% => OK
smog_index: 8.8 7.1628742515 123% => OK
flesch_kincaid_grade: 14.2 12.197005988 116% => OK
coleman_liau_index: 13.0 12.5979740519 103% => OK
dale_chall_readability_score: 8.78 8.32208582834 106% => OK
difficult_words: 109.0 98.500998004 111% => OK
linsear_write_formula: 11.5 12.3882235529 93% => OK
gunning_fog: 12.0 11.1389221557 108% => OK
text_standard: 12.0 11.9071856287 101% => OK
What are above readability scores?
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Rates: 66.0 out of 100
Scores by essay e-grader: 4 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.