About 13.8 billion years ago, the Big Bang gave rise to everything, everywhere, and everywhen—the entire known Universe. What caused the Big Bang? What happened that first moment at the beginning of ...

The twin Magellan Telescopes in Chile are each 6.5 meter optical telescopes. These telescopes are both equipped with instruments to take images and spectra of light from a wide variety of astronomical ...

Understanding the cosmos involves both observation and theory. Observation provides real-world data about how stars, galaxies, and other objects in space behave. Theory connects that data together ...

Our department is young in spirit but has a century-old tradition of exceptional graduate students and faculty. Our teaching and research interests span the entire Universe with exciting observational ...

The Center for Astrophysics | Harvard & Smithsonian Theoretical Astrophysics (TA) division uses theoretical models and computer simulations to understand a variety of fundamental astrophysical ...