Records of solar eclipses from a millennium and a half ago have allowed scientists to refine measurements of Earth’s changing rotation. Review of historical documents from the Byzantine Empire has given scientists timings and locations for five solar eclipse eclipses. The results place new, tighter constraints on Earth’s variable spin rate, giving us a better understanding of how our planet is changing over time. We seem to be gaining 1.8 milliseconds a century, according to the new research by the University of Tsukuba.Read Long Article
