The San Mateo County Astronomical Society Star Parties, Speaker Series, and meetings are open to the public. Speaker Series and meetings happen in person at the College of San Mateo Planetarium. General meetings and socials start at 7:00 pm in Room 110 in the ISC Building (36), and Speaker presentations start at 8:00 pm in the Planetarium​ or a nearby lecture room.​

Speaker Series

Join the San Mateo County Astronomical Society for a thrilling Speaker Series featuring renowned experts from the realms of astronomy, physics, and related fields. Engage with thought leaders who bring the latest from the frontiers of scientific discovery right to our meetings. Our lineup includes luminaries from NASA-Ames, Stanford, SLAC, KIPAC, SETI, UC Berkeley, UC Santa Cruz, and other prestigious institutions across the US, connecting us to the heart of scientific innovation. This is your chance to be at the forefront of groundbreaking research and developments in the cosmos!

February 6, 2026 8:00 pm Dr Sofia Sheikh, SETI Research Scientist: Searching for Technological Life in the Universe

March 6, 2026 8:00 pm Theo Schutt, Stanford/SLAC, KIPAC, From First Light to Feature Film: Preparing Rubin to Record a Decade-long Cosmic Show. New! Please reserve a ticket to this event via Eventbrite here. Note: This event has sold out, You may attend on standby basis, but with no guarantee of entry.

May 1, 2026 8:00 pm Dr Brian Lantz, Stanford, Exploring the Gravitational Wave Universe

September 4, 2026 8:00 pm Dr Jeff Cuzzi, NASA Ames (retired), Cassini- Huygens Mission to Saturn and Titan

Unlocking the Mysteries of the Sun

Catch up on our Past speakers

SMCAS News Group

Join our groups.io Mailing list for updates and notices for events.

Star Parties

Join us under the starry skies for our mesmerizing Star Parties, hosted by the San Mateo County Astronomical Society. Twice each month, we transform Crestview Park in San Carlos into a gateway to the stars. Come Discover the Universe with us.

Day         - Sunset   

2025 Dec 20 - 4:54 PM

2026 Jan 10 - 5:09 PM
2026 Jan 17 - 5:17 PM

2026 Feb 14 - 5:47 PM
2026 Feb 21 - 5:55 PM

2026 Mar 14 - 7:15 PM
2026 Mar 21 - 7:22 PM

2026 Apr 11 - 7:41 PM
2026 Apr 18 - 7:47 PM

2026 May 16 - 8:12 PM
2026 May 23 - 8:18 PM (Observe the Moon Night)

2026 Jun 13 - 8:31 PM
2026 Jun 20 - 8:33 PM

2026 Jul 11 - 8:31 PM
2026 Jul 18 - 8:28 PM

2026 Aug 8 - 8:09 PM
2026 Aug 15 - 8:01 PM

2026 Sep 5 - 7:32 PM (Observe the Moon Night)
2026 Sep 12 - 7:21 PM

2026 Oct 3 - 6:49 PM
2026 Oct 10 - 6:38 PM

2026 Nov 7 - 5:04 PM
2026 Nov 14 - 4:58 PM

2026 Dec 20 - 4:54 PM
2026 Dec 27 - 4:58 PM