Why did many scientists reject the copernican model when it was published?

a. it proposed that gravity affects motion on earth, which sounded unbelievable to many people.
b. it supported the teachings of the catholic church during the spread of the protestant reformation.
c. it presented an unfamiliar method of conducting research and creating new scientific theories.
d. it was a radical change in people’s understanding of the universe and earth’s place in it.

Where did the term “iron curtain” originate? the warsaw pact used the term iron curtain as a code word for communism. in a 1946 speech, british prime minister winston churchill said an iron curtain had fallen across the continent of europe. while visiting western europe in 1946, u.s. president harry truman commented that the mountains there looked like iron curtains. russian general secretary joseph stalin instructed citizens of eastern europe to hang iron curtains over their windows to protect themselves from stray bullets.