Numerous opportunities to attend and participate in seminars of interest to the astronomical community are available each week at the CfA. Speakers are drawn from the CfA community as well from elsewhere to present and discuss their research in astronomy, astrophysics, and related topics.

• Weekly Graduate Student Research Forum
• Monthly CfA Graduate Student Seminar
• High Energy Astrophysics Division
• Initiative in Innovative Computing
• Institute for Theory and Computation Colloquia
• Joint Atomic Physics Colloquia
• Optical and Infrared Astronomy Division
• Radio and Geoastronomy Division
• Solar, Stellar, and Planetary Sciences Division