Astronomi

[Explanation1]: Language correctness:
Readability—Joining two sentences to avoid redundancy and enhance readability.

[Explanation2]: Language enhancement:
Readability—Use of a pronoun to avoid repetition.

[Explanation3]: Technical word choice:
In this context, “concentration” is a better technical word choice to be used.

[Explanation4]: Adverb placement:
In the passive voice, adverbs of manner are generally placed between the helping and main verbs.

[Explanation5]: Academic word choice:
In academic writing, information is presented with accuracy and conciseness. Formal language is a hallmark of academic English. One way to ensure conciseness in expression is converting phrasal verbs to formal words.

[Explanation6]:Subject-specific revision:
Sentence transition and clarity have been improved according to the technical context.

[Explanation7]:Subject-specific revision:
An alternative concise sentence has been recommended to the author.

[Explanation8]: Sentence clarity:
This change has been made to prevent ambiguity between the statements of facts and the experiments conducted in this study.

[Explanation9]: Style:
In American English, that is used to introduce a restrictive clause and which a nonrestrictive clause. Here we have changed that to which as this clause is non-restrictive.