In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
Q: More importantly , the discovery of celestial bodies orbiting something other than Earth dealt a blow to the then-accepted Ptolemaic world system , which held that Earth was at the center of the universe and all other celestial bodies revolved around it .
A:
More importantly , the discovery of celestial bodies orbiting something other than the Earth dealt a blow to the then-accepted Ptolemaic world system .