Galileo Galilei was a physicist, astronomer, mathematician, creative thinking mastermind who lived in the 16th and 17th centuries in Italy. He was the inventor of the telescope, and one of the first people to suggest that the Earth traveled around the Sun and not the other way around. He was very interested in physics and how things worked on Earth, and he conducted a lot of experiments to observe gravity and natural phenomena, quite some time before they were mathematically described by Sir Isaac Newton.
Galileo and many of his contemporaries are thought to have begun experimenting with falling objects and testing the idea that even though objects have different masses, they will fall towards the Earth at the same velocity. Because timing and other factories like wind resistance are an issue at great heights (like dropping a ball from the height of a building), Galileo and fellow scientists used inclined planes, like ramps, to conduct their experiments.
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