The article and the lecture are both about the colonization of asteroids. While the writer states some reasons why an asteroid would be the best option, the speaker asserts that there are some downsides in her suggestion.
First, it is true that asteroids have lower gravity which would make it much easier to land and take off. However, the lecturer points out that low gravity actually poses some health risks to humans. One of those risks includes the decrease of bone and muscle density. This won't be safe in the long-term as people will start losing their muscles.
Second, the speaker casts doubt on the possibility of making profits from valuable metals brought back from colonized asteroids. In fact, the cost of supporting asteroid colonization and sending raw materials back to the Earth can be high, and thus reduce the expected profit. Moreover, no one could make sure those metals will remain at high price. As more and more materials are transported and added to the supply, their market price would probably decline.
Third, although some asteroids are easier to reach as they are closer to Earth, it would probably not be easy to return. Unlike Mars or the Moon, asteroids' orbits are usually very unstable, for instance, some may come within Earth's orbit at first, then move away. In other words, they may be close to Earth at one point yet won't stay close after some time. Therefore, it would be a challenge to get back from asteroids.
Transition Words or Phrases used:
actually, first, however, may, moreover, second, so, then, therefore, third, thus, while, for instance, in fact, in other words, it is true
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 11.0 5.04856512141 218% => Less auxiliary verb wanted.
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 4.0 12.0772626932 33% => More relative clauses wanted.
Pronoun: 15.0 22.412803532 67% => OK
Preposition: 30.0 30.3222958057 99% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1213.0 1373.03311258 88% => OK
No of words: 249.0 270.72406181 92% => More content wanted.
Chars per words: 4.87148594378 5.08290768461 96% => OK
Fourth root words length: 3.97237131171 4.04702891845 98% => OK
Word Length SD: 2.31827461426 2.5805825403 90% => OK
Unique words: 155.0 145.348785872 107% => OK
Unique words percentage: 0.622489959839 0.540411800872 115% => OK
syllable_count: 372.6 419.366225166 89% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 3.25607064018 184% => OK
Article: 5.0 8.23620309051 61% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 14.0 13.0662251656 107% => OK
Sentence length: 17.0 21.2450331126 80% => The Avg. Sentence Length is relatively short.
Sentence length SD: 29.3031307097 49.2860985944 59% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 86.6428571429 110.228320801 79% => OK
Words per sentence: 17.7857142857 21.698381199 82% => OK
Discourse Markers: 9.92857142857 7.06452816374 141% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.415293033158 0.272083759551 153% => OK
Sentence topic coherence: 0.131656615205 0.0996497079465 132% => OK
Sentence topic coherence SD: 0.100059130612 0.0662205650399 151% => OK
Paragraph topic coherence: 0.236375375842 0.162205337803 146% => OK
Paragraph topic coherence SD: 0.0593175912807 0.0443174109184 134% => OK
Essay readability:
automated_readability_index: 10.4 13.3589403974 78% => Automated_readability_index is low.
flesch_reading_ease: 62.68 53.8541721854 116% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.7 11.0289183223 79% => OK
coleman_liau_index: 10.67 12.2367328918 87% => OK
dale_chall_readability_score: 8.22 8.42419426049 98% => OK
difficult_words: 59.0 63.6247240618 93% => OK
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 8.8 10.498013245 84% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 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.