Riverside Astronomical Society—Outreach, star parties, dark sky site, and you!
Next monthly meeting of the Riverside Astronomical Society

Announcement: All RAS Public Events Postponed Until Further Notice

Due to the travel and gathering restrictions set forth by state and county health officials, we have cancelled upcoming star parties and outreach events. Monthly meetings are being held virtually via WebEx during this time. Click here for next meeting details.

Travel to GMARS is highly discouraged and access to the houses is prohibited.

Please read this page for additional details. Stay tuned to this website and to our Facebook page for updates.

Nightfall 2020

Nightfall 2020 is cancelled
Nightfall 2021: 11/4-11/7

Details >

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 6/2021!)

MORE INFO >

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 star party of the Riverside Astronomical Society–The best astronomy club in southern California!

Monthly Star Party at GMARS

Postponed Until Further Notice

All RAS public activities are currently postponed. Please check this space for updates.

Comet C/2020 F3 NEOWISE with dust and gas (ion) tails

Comet C/2020 F3 NEOWISE with dust and gas (ion) tails. Taken by Daniel Perry on July 15 from the Mojave National Preserve.

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.