Newton didn't "discover" gravity... he sort of named it, and he figured out the equations by which it works, but it had been "discovered" long ago by the very first animal to fall down.
These equations, along with a lot of other stuff, were set forth in a book called Principia Mathematica. It's not perfectly clear what the exact order was, but it's generally thought that he developed the calculus out of a general need for it in order to understand the workings of gravity, so "calculus" might be a good answer.
Isaac Newton discovered the force of gravity, which continues to influence and affect us today.
Isaac Newton discovered the concept of gravity by accident when observing an apple fall from a tree, which led him to develop the law of universal gravitation.
Isaac Newton did not discover gravity, but he is credited with developing the universal law of gravitation and explaining the mechanics of gravity in his work "Philosophiæ Naturalis Principia Mathematica." The concept of gravity was known to ancient civilizations, and Newton's contributions built upon existing knowledge.
Sir Isaac Newton is said to have discovered the concept of gravity in 1665 or 1666, when he observed an apple falling from a tree. This observation eventually led to his development of the law of universal gravitation.
Sir Isaac Newton is the scientist credited with formulating the law of gravity. His work on gravity and laws of motion were published in his book "Philosophiæ Naturalis Principia Mathematica" in 1687.
isaac newton discovered gravity and the telescope
Isaac newton discovered the law of gravity.
Isaac Newton discovered the force of gravity, which continues to influence and affect us today.
His name is Issac Newton and he discovered the laws of gravity inertia and motion
Isaac newton discovered gravity in 1832 and had it published in 1899
gravity
Discover gravity
he discovered gravity he discovered gravity
Gravity was discovered in 1650 by Sir Isaac Newton.
Sir Isaac Newton
Isaac Newton discovered the concept of gravity by accident when observing an apple fall from a tree, which led him to develop the law of universal gravitation.
Discover gravity