Riverside Astronomical Society—Outreach, star parties, dark sky site, and you!

Next Virtual Club Meeting

Saturday, December 11th

RAS monthly meetings are your opportunity to attend free presentatons by professional astronomers, catch up on club business, and hear about the latest happenings in the night sky (sometimes, the daytime sky too). Our general meetings are always free and open to the public.

For the foreseeable future, we are continuing to hold virtual meetings via WebEx. Information to join will be provided approximately 3-7 days prior to the next meeting.

Attend a Riverside Astronomical Society star party at the Goat Mountain Astronomical Research Station (GMARS) in southern California's Inland Empire
Join the best astronomy club in southern California—the Riverside Astronomical Society!

Special Rates for
New Members!


  • Individual: $20
  • Family: $25
  • Student: $20

(Your membership will be valid through 6/2022!)

MORE INFO >

Calendar of events for the Riverside Astronomical Society
Follow the best astronomy club in southern California, the Riverside Astronomical Society!


Quick links for browsing your way through RivAstro.org—The RAS Website—and getting to other sites

Next New Moon Weekend at GMARS

December 3rd thru 5th

We are still being cautious and following CDC guidelines for social distancing and mask-wearing. It's especially important, as the holidays approach and families gather or prepare to gather, that we remain vigilant about these precautions and help keep each other healthy.

🌵 🥶 🌚 ⭐ 🔭

GMARS will be open for the "new moon weekend" but we will not be having our star-be-cue or any other organized activities. That said, feel free to come out and enjoy the cool weather and dark skies while maintaining social distance and sanitizing surfaces in the GMARS houses!

The Double Star Cluster in Perseus by Glenn Diekmann.

The Double Star Cluster in Perseus by Glenn Diekmann. Click the image for a larger version.

RAS Calendar of Events

Ask the Outreach Director to add an event to the calendar. View larger calendar.

The scene at a GMARS Star Party. Join the Riverside Astronomical Society in Landers at our next star party! Photo by Michael Bauer.