Live-streamed Lectures

About SFAA Live-streamed Lectures

Once monthly, the SFAA hosts distinguished guest speakers who are leaders in the fields of astronomy, physics and related disciplines. The speakers present to the public and SFAA members the latest developments from cutting-edge scientific programs.

Click here for upcoming speakers and their lecture topics.

Due to the COVID-19 pandemic,  the monthly lectures are being made available by live stream.  Use your computer or mobile device to connect to the links provided below.

16 September 2020, Live-streamed via Zoom, YouTube and Facebook

“The Formation and Evolution of Binary Stars"


Aaron T. Lee, PhD, St. Mary's College

With nearly 50% of the stars we see in the sky being part of binary systems, binarity and multiplicity of stars is a common phenomenon in the Milky Way Galaxy. With this percentage measured even higher in star-forming regions, the formation of binaries appears to be part of the star-formation process. This talk will discuss the formation of stars and how this process helps us to better understand the prevalence of binary star systems in the Milky Way Galaxy and how modern-day observations of stars and galaxies rely on our understanding of stellar binarity.

Brief Bio

Aaron T. Lee is a professor of physics and astronomy at St. Mary’s College of California. He was a postdoctoral scholar at the University of Texas Austin, where he worked with Stella Offner. He was a graduate student, National Science Foundation graduate fellow at UC Berkeley and worked with Chris McKee and Steve Stahler. Prior to graduate school, he completed Part lll of the Mathematics Tripos at Cambridge University, and was an undergraduate at Northwestern University.

Aaron views astronomy as a “gateway science”, and is excited for the opportunities to use astronomy as a means of introducing people to the wonders of science and the scientific method.

How to Attend

To attend the virtual meeting "live" with the opportunity to ask questions:

Connect by 7:30pm on Wednesday, September 16th by clicking this Zoom meeting link:

Clicking the link may prompt you to install the Zoom virtual meeting app. Once installed, you will be able to join the meeting.

Once joined, you can test your audio and video, and greet other members.

Board members will join the meeting early to help troubleshoot any problems with audio or video. 

Club and welcome announcements will begin at 7:45pm and the lecture will start promptly at 8:00pm.

Alternatively, please visit the following channels to attend the live stream:

SFAA YouTube channel:

SFAA Facebook: