Final answer:
The author's use of repetition conveys tone and their attitude toward space exploration by emphasizing certain words or phrases. This repetition helps reinforce the author's purpose in communicating their attitude.
Step-by-step explanation:
The author's use of repetition in conveying tone in relation to space exploration creates emphasis and reinforces the author's attitude toward the subject. The repetition of certain words, phrases, or ideas can evoke emotions and convey a specific tone. For example, if the author repeats positive words or phrases, it can indicate a positive or enthusiastic attitude toward space exploration. On the other hand, if the author repeats negative words or phrases, it can indicate a more critical or skeptical attitude.