San Diego Astronomy Association (SDAA) sponsors speakers on a wide range of astronomy topics on the third Wednesday of every month at the Mission Trails Regional Park Visitors Center. The Program meeting begins at 7:00 PM. Each attendee receives one free door prize ticket. After announcements and a small amount of business, the audience is treated to the featured presentation. At the close of the meeting the door prizes are presented.  The event is open to the public. The Mission Trails Regional Park Visitors Center is at One Fr. Junipero Serra Trail, San Diego CA 92119.  Call the park at 619-668-3281 for more information or visit

Please contact Dave Wood if you have an questions, comments, or ideas for the Program Meetings.

Meetings since July 2020 are being archived on the SDAA YouTube page.

December 16, 2020

Speaker: Dr. Alex Ji - Carnegie Observatories

Topic: The First Stars

SDAA Speaker

Dr. Alex Ji is a postdoctoral fellow at the Carnegie Observatories. Alex is a near-field cosmologist, studying nearby stars and galaxies to understand the first stars and galaxies, the origin of the elements, and the history of the Milky Way. Alex's main lockdown activity has been eating Trader Joe's snacks.


You can register in advance for this meeting at the following link. After registering, you will receive a confirmation email containing information about joining the meeting. :

Upcoming SDAA Program Meetings
January No general meeting - annual banquet
February 19 Dr. Steven Levin (NASA JPL) - NASA's Juno at Jupiter
March 18 Dr. Nicholas Galitzki ( UCSD) - Cosmic Microwave Background at the Simons Observatory - cancelled
April 15 Mr. Paul Ericson - International Dark-Sky Association
May 20 Dr. Quinn Konopacky (UCSD) - The Intricate Dance of Star and Planet Formation
June 17 Dr. Jim Fuller (CalTech) - The Sound of Stars
July 15 Blaine Baggett - Apollo at JPL
August 19 Dr. Nicholas Galitzki ( UCSD) - Cosmic Microwave Background at the Simons Observatory
September 16Steve Hallmann - "Discovering The Darkness ... Dark Matter & Dark Energy ... An Overly Simplified Tale of How We Came To Know That Most Of The Universe Is Dark"
October 21 Mia de los Reyes - The Loneliest Galaxies in the Universe
November 18 Ryan Rubenzahl - Measuring the Speed of Stars More Precisely Than Your Car’s Speedometer
December 16 Dr. Alex Ji - TheFirst Stars