http://www.top-directory.net/science/astronomy/Best collection of website in the Internet. Best general, niche and regional Website - You can find all this here. </p><p>Beyond the planet earth, there are more than seventy sextillion stars, more than a hundred billion in an average sized galaxy. The Milky Way is just one such galaxy. Since the beginnings of mankind, there has been a strong curiosity about what lies beyond the sky. Several civilizations observed the skies and interpreted the movements of stars. The Stonehenge and other ancient observatories provide ample proof of this. Such findings lead to theories about the solar system and the existence of bodies much bigger than this planet.</p><p> The renaissance period saw a revolution of sorts in the field of astronomy. The theory of Nicolaus Copernicus regarding the sun at the center was defended by Galileo and others then on. Keplers theory and then, Newtons laws of motion lead to a better understanding of the system of celestial bodies.</p><p> Astronomy is clearly defined as the branch of science that describes the movements of heavenly bodies and other physical and chemical phenomena beyond the earths atmosphere or even the galaxy. From the earliest telescope built by Galileo Galilei to the latest and more powerful space stations, the science of astronomy has indeed come a long way. Mankind has been exploring the heavenly bodies with more advanced technology and knowledge than ever before.</p><p>