Here's why:
* Earlier observations: People observed the effects of gravity long before Newton. Ancient philosophers like Aristotle pondered why objects fall to the ground.
* Galileo's work: Galileo Galilei made crucial observations and experiments about the motion of falling objects, paving the way for Newton's work.
* Newton's contribution: Newton formulated the Law of Universal Gravitation, which explained the force of attraction between any two objects with mass. This was a groundbreaking achievement, unifying the forces that kept the apple on the tree and the moon in orbit around Earth.
So, while we give Newton credit for the laws of gravity, he built upon the work of others and his achievement was a culmination of centuries of observation and thought.