Sir Isaac Newton discovered gravity in 1687, realizing the same force that makes apples fall from tree limbs also keeps the Moon in orbit.

In 1632, Galileo Galilei put forth the basic principle of relativity. The existence of the gravitational constant was explored by various researchers from the mid-17th century, helping Isaac Newton …

Revered in his own lifetime, he discovered the laws of gravity and motion and invented calculus. He helped to shape our rational world view. But Newton’s story is also one of a monstrous ego...

Everyone knows that Isaac Newton came up with the law of gravity after seeing an apple fall from a tree in his mother’s garden. Newton himself told the story to several contemporaries, who recorded it for …

Legend has it that Isaac Newton formulated gravitational theory in 1665 or 1666 after watching an apple fall and asking why the apple fell straight down, rather than sideways or even upward.

Jan 15, 2026 · Newton’s big discovery happened one day while he was sitting under an apple tree. An apple fell, and he started to wonder why it fell straight down. This moment led him to think about …

Jan 3, 2024 · As the story goes, Isaac Newton came up with the idea of gravity around 1665 or 1666. The tale says he saw an apple fall and wondered why it fell straight down instead of going sideways …

Apr 24, 2017 · The discovery of how gravity works progressed in several stages, beginning with Democritus and proceeding through the work of al-Hasan ibn al-Haytham, Galileo Galilei and Sir …

The first test of Newton's law of gravitation between masses in the laboratory was the Cavendish experiment conducted by the British scientist Henry Cavendish in 1798. [4] It took place 111 years …

1665 A.D. At the age of 23, young Isaac Newton realizes that gravitational force accounts for falling bodies on earth as well as the motion of the moon and the planets in orbit.