Ideas in physics are never absolute; It's an ever-evolving topic. We think we've discovered everything there is to know about it, and then we discover something new that changes everything. This is one of the reasons why it is so interesting to learn about physics: there will always be something new. There are many very important discoveries in Physics. This article will describe some of the findings. These discoveries are prevalent throughout history and in our daily lives. One of the oldest, but still important discoveries in the field of physics is the Law of Falling Bodies. Discovered by Galileo Galilei, it remains a fundamental part of physics today. It states that all falling objects, regardless of mass, height, or any other determining factor, will remain at a constant acceleration (just ignoring air resistance). This is important because it allows a person to always know the acceleration when determining an unknown about a moving object, for example when determining velocity. The Law of Falling Bodies was very important even at the time of its discovery because it disproved Aristotle, which everyone believed to be true for almost 2000 years. Aristotle said that an object with a larger mass would fall faster than an object with a smaller mass, which is not true. In 1600, Sir Isaac Newton concluded that “that every object with mass in the universe exerts gravitational attraction on each other. " Primarily, this means that an object that has mass has a gravitational force between said object and every other object in the universe. This explains how we, humans, remain standing on the earth, not floating in the air. The earth has mass and every person has mass. Therefore, there is a force between each...... half of the paper ....../NumRel/GenRelativity.html>.Jupiter Scientific, "A Century of Physics", 1999.“Meissner Effect for Superconductors,” .NASA, Newton's Third Law Applied to Aerodynamics, .“Newton's Three Laws of Motion,” .Oracle, “What is Quantum Physics?” .Quora, “Physics : what is a quantum leap?".Scienceray, "The greatest discoveries in physics", September 3, 2008.Wikipedia, "Mass-energy equivalence,"