The language and emotionality in Dr. Tyson's interview and preface differ.
The excerpts from Dr. Tyson's interview and the preface differ in that Dr. Tyson's interview is less emotional while his preface uses language that clearly expresses his feelings and emotions. In the interview, Dr. Tyson talks about the reclassification of Pluto in a more matter-of-fact manner, noting the scientific process, whereas in the preface, he discusses the emotional aspects and impact of the reclassification.
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