Which statement describes nicholas copernicus's most famous contribution to science? a. he used mathematics to conclude that the earth revolves around the sun and published his findings in on the revolution of heavenly bodies. b. he reinforced the idea that observation and experimentation was necessary to acquire knowledge. c. he is often called the father of modern mathematics because of his discourse on the method of rightly conducting the reason and seeking truth in the sciences.

Which is not a claim kennedy made? a. the fact that communist cuba is so close to american soil is one reason we need to accelerate our space program. b. his decision to shift the study of space to one of the highest american priorities was one of his most important decisions as president. c. within these last months at least 45 satellites have circled the earth. (i think it's this one) d. the mariner spacecraft now on its way to venus is the most intricate instrument in the history of space science. i need this answer really quick, so .