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

Essay topics:

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."

Even though there are major risks involved in manned space flights, the trade off would be the human skill, knowledge and expertise. No matter how sophisticated or very well designed a machine - in this case an unmanned space satellite is, it can not respond in situations which are not predicted in advance. In such situations, human skill and the ability to respond spontaneously in unexpected situations come into play.

Universe being so massive is also very treacherous and unpredictable. Even though the research and advancement in the field of space and aeronautics is commendable, there are thousands of things which are still unknown and mysterious to astronauts and scientists. This is why these manned and unmanned probes are launched into space year after year to resolve such mysteries. Now, it is highly likely that a satellite, manned or unmanned when in space encounters such a phenomena which was unknown or wasn't accounted for. In such situations a manned space flight has much more chances of survival than an unmanned one due to human ability of thinking on their own and taking spontaneous decisions. One cannot restrict the imagination of a human mind while that of man made device is limited to the predictable scenarios and situations. The costs involved in sending unmanned probes and satellites into space are perhaps relatively lower as compared against manned space flights, however, are still massive. In situations of unexpected scenarios, the money spent on an unmanned spacecraft is expected to be a complete loss, however, still has survival chances in case of a manned one.

Moreover, there are things that can only be experienced with the help of human senses - for example the feel of the crust. The experiences of human senses can be closely, however, not completely be replicated by a man made device. Due to this manned spacecrafts have their own significance. However, due to lesser and risks and costs involved in launching a unmanned spacecraft that a manned one, it can be agreed that percentage of former must be higher. Manned spacecraft should be launched only in situations which are highly unpredictable and human intervention would be required. Although, due to the risk of human life associated, precatuions must be taken

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Comments

Grammar and spelling errors:
Line 3, column 469, Rule ID: A_PLURAL[1]
Message: Don't use indefinite articles with plural words. Did you mean 'a phenomenon' or simply 'phenomena'?
Suggestion: a phenomenon; phenomena
... unmanned when in space encounters such a phenomena which was unknown or wasnt accounted fo...
^^^^^^^^^^^
Line 3, column 502, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: wasn't
...s such a phenomena which was unknown or wasnt accounted for. In such situations a man...
^^^^^
Line 3, column 938, Rule ID: COMP_THAN[3]
Message: Comparison requires 'than', not 'then' nor 'as'.
Suggestion: than
...into space are perhaps relatively lower as compared against manned space flights, ...
^^
Line 5, column 212, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...however, not completely be replicated by a man made device. Due to this manned sp...
^^
Line 5, column 358, 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
...d risks and costs involved in launching a unmanned spacecraft that a manned one, ...
^

Discourse Markers used:
['also', 'however', 'if', 'moreover', 'so', 'still', 'well', 'while', 'for example']

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance in Part of Speech:
Nouns: 0.210784313725 0.25644967241 82% => OK
Verbs: 0.164215686275 0.15541462614 106% => OK
Adjectives: 0.125 0.0836205057962 149% => OK
Adverbs: 0.0735294117647 0.0520304965353 141% => OK
Pronouns: 0.0122549019608 0.0272364105082 45% => OK
Prepositions: 0.115196078431 0.125424944231 92% => OK
Participles: 0.0710784313725 0.0416121511921 171% => OK
Conjunctions: 2.91368585604 2.79052419416 104% => OK
Infinitives: 0.0220588235294 0.026700313972 83% => OK
Particles: 0.00245098039216 0.001811407834 135% => OK
Determiners: 0.0808823529412 0.113004496875 72% => OK
Modal_auxiliary: 0.0245098039216 0.0255425247493 96% => OK
WH_determiners: 0.0196078431373 0.0127820249294 153% => OK

Vocabulary words and sentences:
No of characters: 2280.0 2731.13054187 83% => OK
No of words: 372.0 446.07635468 83% => More content wanted.
Chars per words: 6.12903225806 6.12365571057 100% => OK
Fourth root words length: 4.39173103935 4.57801047555 96% => OK
words length more than 5 chars: 0.362903225806 0.378187486979 96% => OK
words length more than 6 chars: 0.279569892473 0.287650121315 97% => OK
words length more than 7 chars: 0.231182795699 0.208842608468 111% => OK
words length more than 8 chars: 0.147849462366 0.135150697306 109% => OK
Word Length SD: 2.91368585604 2.79052419416 104% => OK
Unique words: 181.0 207.018472906 87% => More unique words wanted.
Unique words percentage: 0.486559139785 0.469332199767 104% => OK
Word variations: 51.5333727993 52.1807786196 99% => OK
How many sentences: 17.0 20.039408867 85% => OK
Sentence length: 21.8823529412 23.2022227129 94% => OK
Sentence length SD: 38.6526542641 57.7814097925 67% => OK
Chars per sentence: 134.117647059 141.986410481 94% => OK
Words per sentence: 21.8823529412 23.2022227129 94% => OK
Discourse Markers: 0.529411764706 0.724660767414 73% => OK
Paragraphs: 3.0 5.14285714286 58% => More paragraphs wanted.
Language errors: 5.0 3.58251231527 140% => OK
Readability: 49.8393421885 51.9672348444 96% => OK
Elegance: 1.58823529412 1.8405768891 86% => OK

Coherence and Cohesion:
Essay topic to essay body coherence: 0.425968150061 0.441005458295 97% => OK
Sentence sentence coherence: 0.114504687191 0.135418324435 85% => OK
Sentence sentence coherence SD: 0.0638974163414 0.0829849096947 77% => OK
Sentence paragraph coherence: 0.49769987552 0.58762219726 85% => OK
Sentence paragraph coherence SD: 0.120520374165 0.147661913831 82% => OK
Sentence topic coherence: 0.17171042328 0.193483328276 89% => OK
Sentence topic coherence SD: 0.0859733365012 0.0970749176394 89% => OK
Paragraph paragraph coherence: 0.432553237717 0.42659136922 101% => OK
Paragraph paragraph coherence SD: 0.0102396411079 0.0774707102158 13% => Paragraphs are so close to each other.
Paragraph topic coherence: 0.305218115975 0.312017818177 98% => OK
Paragraph topic coherence SD: 0.108869862231 0.0698173142475 156% => OK

Task Achievement:
Sentences with positive sentiment : 8.0 8.33743842365 96% => OK
Sentences with negative sentiment : 4.0 6.87684729064 58% => OK
Sentences with neutral sentiment: 5.0 4.82512315271 104% => OK
Positive topic words: 3.0 6.46551724138 46% => OK
Negative topic words: 3.0 5.36822660099 56% => OK
Neutral topic words: 1.0 2.82389162562 35% => OK
Total topic words: 7.0 14.657635468 48% => More topic words wanted.
What are sentences with positive/Negative/neutral sentiment?

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Rates: 50.0 out of 100
Scores by essay e-grader: 3.0 Out of 6 -- The score is based on the average performance of 20,000 argument essays. This e-grader is not smart enough to check on arguments.
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Note: This is not the final score. 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.