4/21 Special Talk Sir Roger Penrose
Penrose is this year's keynote speaker. He'll also give a public talk on astrophysics on April 21 at Steward Observatory, speaking about evidence for his theory that the Big Bang was preceded by another aeon, and another before that, suggesting we live in a serial, rather than parallel, universe.

For Public
Public events include our Monday Night Lecture Series, world-reknowned Astronomy Camp and Mt Lemmon Sky Center.

For Students
A good place to start if you want to become an undergrad major or grad student, or need to find our schedule of classes.

For Scientists
Find telescopes and instruments, telescope time applications, staff and mountain contacts, and faculty and staff scientific interests.