Upcoming Events

Events are open to all members and the general public. Sign up for email event updates by registering with Night Sky Network.

Most of our events happen at the Chabot Space and Science Center. Get directions here.

Next General Meeting

Saturday, June 6th, 2020
7:30 P.M.
Virtual Space via Facebook Live-Stream or Zoom


(EAS Members will get a Zoom invitation by Email)

Our Speaker is Robert McGehee, University of California, Berkeley 

Illuminating Dark Matter

Dark matter is the cosmic parent of all vast structures in the night sky, including our own Milky Way galaxy. Yet we know so very little about this mysterious stuff that constitutes 85%(!) of the material universe. We don’t know what it’s made of, we don’t know where it came from, and we don’t know if there’s any way to “see” it.

In the first half of the talk, Robert will outline concrete things we do know about dark matter and how we’ve come to know them. He will start with historically significant evidence for dark matter and move on to more recent observations and simulations. All of this evidence will be astronomical or cosmological in nature with beautiful accompanying images and simulations.

In the second half, he will discuss the three complementary and distinct ways in which physicists and astronomers are trying to answer: what is dark matter? These include directly detecting dark matter in giant underground experiments, producing it at huge particle accelerators, and searching for its possible electromagnetic signals in telescopes. He will cover current, state-of- the-art efforts in all three directions, underlining the hope of this generation of scientists to soon discover this profoundly important but elusive stuff.


EAS sends volunteers to schools, libraries, and anywhere curious aspiring astronomers gather. EAS volunteers bring their own equipment or borrow telescopes. Students, parents, and teachers are always thrilled to look through the telescopes and ask questions. You’ll meet all sorts of interesting people and provide a unique and inspiring experience to kids and parents who may have never looked through a telescope before. Find our next event on the calendar above.

Inquire about and request visits by e-mailing EAS Outreach Coordinator Raymond Howard at outreach@eastbayastro.org. Visit our outreach page to find out about upcoming events.

Members Only Viewing Nights (MOVN)

Once a month, we schedule a Members Only Viewing Night at the Chabot Telescope Deck for both EAS and Chabot members. This is our opportunity to look through Chabot’s historic instruments and research telescope, as well as bring our own equipment to share in a more quiet venue. The schedule for MOVN appears in the event calendar below.

Barcroft High Altitude Star Party

We’re sorry. Because of COVID-19, EAS has cancelled the 2020 Barcroft High-Altitude Star Party. We’ll try again in 2021.

Event Calendar

Header photo by EAS member Alan Roche.