Who proved that objects of various weights fall at the same rate when released simultaneously?

Galileo Galilei conducted pivotal experiments in the late 16th and early 17th centuries that demonstrated that two objects of different weights fall at the same rate when released from the same height in a vacuum. He famously dropped balls of varying weights from the Leaning Tower of Pisa and observed that they hit the ground simultaneously. This challenged the long-held Aristotelian belief that heavier objects fall faster than lighter ones. Galileo's insights laid the groundwork for the understanding of gravity and motion, significantly influencing physics and our understanding of how objects interact under the influence of gravity. His emphasis on experimentation and observation marked a turning point in scientific methodology, moving towards what we now recognize as the scientific method.