It is the seventeenth century and many scientists are trying to figure out the answer of one question. That questions is whether light is instantaneous, so in other words, does light travel at an infinite speed or does it travel at a finite speed. Many scientists of this time believed that light was instantaneous or that “it could travel any distance at no time at all.1” There were a handful of scientists at this time that thought that light did travel at a finite speed. One of these scientists who believed this was Galileo. So Galileo set out to figure out what speed light travels. He came up with a theory to test this. He figured that he could sit on a hill with a lantern and then someone else would be on another hill with a lantern. He would
