Space, Time, Physics!
Learn about our universe from the experts who spend their lives exploring it.
Just a few hundred years ago, most people believed the world was flat, with a definitive endpoint. Over the last century, thanks in large part to the development of the field called astrophysics and the technological advances that have accompanied it, we have learned incredible amounts about the vast recesses of our universe—areas so far away that human eyes can never hope to see them directly. For example, the photo above, of a spiral galaxy 60 million light years from Earth, was recently captured by the Dark Energy Camera in Chile. The Dark Energy Survey Collaboration between Fermilab and the National Optical Astronomy Observatory aims to tell us more about our universe (why, for example, the universe is expanding an increasing rate) by mapping the distant sky. Questions about our universe—such such as why the universe is expanding rapidly and what gives particles mass—and the search for clues, can be as fascinating as the answers. Peruse the following Academy resources to learn more about our universe—both the known and unknown.