During the Middle Ages, European scientists made great discoveries about the nature and composition of the universe. Star charts were devised by Tycho Brahe, court astronomer of Denmark. Kepler developed calculus to predict the motion of planets. Newton defined gravity. Centuries later, we live in an age of space exploration a time when the mysteries of outer space are more and more visible to inhabitants of Earth.
Discoveries occur every day, many with the potential to rearrange our conception of the universe.
Despite recent advancements in astronomy and cosmology, great gaps of knowledge remain. We have lots of answers already. Test your knowledge of the universe by taking ENN's astronomy quiz. Click here to take ENN's astronomy quiz. Come along on ENN's Sky Tour.