Today, the simple laws of motion as defined by Isaac Newton, for example, are known to the most modest students, yet Galileo spent his life unravelling these mysteries. His many discoveries ...

Isaac Newton built on many of Galileo's insights when developing his laws of motion. These ideas would later play a critical role in Einstein's thinking about energy, mass, light, and motion.

It took until Galileo's time, in the 1600s ... In this short video Professor Brian Cox describes Newton’s First Law of Motion, focusing on the challenging concept of the effect of a force ...