Happy Birthday: Nicolaus Copernicus is 540 today

Happy Birthday to Nicolaus Copernicus, born this day 540 years ago. Though his work on orbits still left us with epicycles (Kepler would succeed in eliminating them with his elliptical orbits replacing Copernicus’ circular ones) he nonetheless moved the science of astronomy and cosmology forward by his placement of the Sun at the centre of … Continue reading Happy Birthday: Nicolaus Copernicus is 540 today