Last updated: September 10, 2026
Between Earth–Mars launch windows, the Bay Area’s job is to keep people building, advocating, and showing up. This guide maps Mars advocacy chapters, aerospace professionals, makers, and adjacent astronomy clubs from San Francisco through the South Bay and East Bay.
Not a conference list—that’s the event calendar. Sister guides: NYC · Austin.
How to use this list
- Verify before you go. Chapter sites and Meetups go stale.
- Chapters go quiet. Email before you assume a fixed monthly room.
- Astronomy ≠ Mars advocacy. Telescopes feed the pipeline; they are not settlement organizing.
- AIAA ≠ Mars Society. Careers vs destination—both useful.
Bay Area clubs & nights
| Org | Type | How to find | URL |
|---|---|---|---|
| Mars Society Northern California | Advocacy / chapter | Chapter site; confirm calendar | site |
| NSS Genesis (SF Bay Area) | Advocacy / chapter | NSS chapter page | chapter |
| AIAA San Francisco Section | Professional / aerospace | Section events | aiaa-sf.org |
| Peninsula Astronomical Society (PAS) | Astronomy (adjacent) | Public nights / Foothill Observatory | pastro.org |
| San Jose Astronomical Association (SJAA) | Astronomy (adjacent) | Star parties and meetings | sjaa.net |
| San Mateo County Astronomical Society (SMCAS) | Astronomy (adjacent) | Local observing / talks | smcas.net |
| Eastbay Astronomical Society | Astronomy (adjacent) | Events (often Chabot-adjacent) | eastbayastro.org |
| Maker Nexus (Sunnyvale) | Makerspace / DIY (adjacent) | Classes, open hours | makernexus.org |
Notes: Mars Society NorCal and NSS Genesis for destination/policy energy. AIAA for technical careers. PAS, SJAA, SMCAS, Eastbay for telescopes and public nights. Maker Nexus for people who build hardware between windows.
National finders
| Org | URL |
|---|---|
| Mars Society | marssociety.org/join |
| NSS | nss.org |
| SEDS | seds.org |
More cities + the bigger clock
Submit a verified Bay Area group: Earth2@Mars-Dispatch.com.
Mars Dispatch — News, unearthed. Chapters change. We update when sources do.
Category: Events