This story was originally published on HackerNoon at: https://hackernoon.com/the-velocity-of-light. Jupiter’s moons are sometimes eclipsed by Jupiter, and it is easy to calculate the times when this ought to occur. Check more stories related to writing at: https://hackernoon.com/c/writing. You can also check exclusive content about #hackernoon-books, #project-gutenberg, #bertrand-russell, #the-a-b-c-relativity, #essay, #physics-studies, #books, #ebooks, and more. This story was written by: @bertrandrussell. Learn more about this writer by checking @bertrandrussell's about page, and for more stories, please visit hackernoon.com. Most of the curious things in the theory of relativity are connected with the velocity of light. If the reader is to grasp the reasons for such a serious theoretical reconstruction, he must have some idea of the facts which made the old system break down.