The departure of the splendid Hale-Bopp comet is mentioned______.
A: to honor the contributions of Hale-Bopp.
B: to introduce to the topic of new report on cosmic matters.
C: to challenge the basic tenets of astronomy.
D: to recount the reactions of the public to the comet.
A: to honor the contributions of Hale-Bopp.
B: to introduce to the topic of new report on cosmic matters.
C: to challenge the basic tenets of astronomy.
D: to recount the reactions of the public to the comet.
