⚠️ ALERT⚠️
The Library building is temporarily closed. Library staff and some services have been relocated to the 4th and 5th floors of the Howe Center.
Visit the following link for services and hours available at Howe: Library Support and Services During Summer Closure.
Lectures from the Department of Astronomy and Astrophysics at the California Institute of Technology, led by Dr. Cameron Hummels and staffed by volunteers in the Caltech astronomy community, recorded since 2016 and presented monthly.