Question

Sir Issac Newton:

A. proposed the elliptical orbit of the planets
B. applied mathematical reasoning to many astronomical theories
C. used mathematical calculations to discover the planet Neptune
D. all of the above

Answer 1

B. applied mathematical reasoning to many astronomical theories
C. used mathematical calculations to discover the planet Neptune

were done by other people. For Newton himself, the ans is

A. proposed the elliptical orbit of the planets