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 Welcome to the
Peninsula Astronomical Society's
web site.


The Peninsula Astronomical Society is a group of some 200 Bay Area astronomy enthusiasts of all ages and backgrounds. Some members are professionally trained in astronomy, others are just starting and have never looked through a telescope before. One thing that we all have in common is an interest in the sky.

The PAS holds meetings on the second Friday of each month at 7:30 pm on the campus of Foothill College in Los Altos Hills, CA (between San Jose and Palo Alto).  The meetings are usually held in Room 5015, next to Parking Lot 5 (see map). Each meeting features a speaker (or speakers) bringing us up to date on different topics in astronomy. The public is welcome to attend these meetings; there is no charge to attend.  Note, however, that there is a $3 charge for parking - visitor parking permits are available from the machines in the parking lots.  Please do not park in spaces marked "Staff" - you will be ticketed!

As part of its commitment to bringing astronomy to the public, the Peninsula Astronomical Society operates the Foothill College Observatory (click here for more information). The Observatory is staffed by members of the society who volunteer to conduct the regularly scheduled public programs.

In addition to operating the Foothill Observatory, the PAS has its own observatory in the nearby Santa Cruz Mountains. This location has AC power and room for members to set up their own telescopes at our monthly star parties. This site is also the home of the society's 12" telescope, available for member use after a checkout.

For informaton about membership in the PAS, click here.







by G. David Nordley.

Friday July 12th, 2019 at 7:30pm

NEW VENUE - Los Altos Public Library

ADDRESS is  --  13 S. San Antonio Road, Los Altos, CA 94022

The driveway is just one block south of the San Antonio - Main Street intersection. FREE Parking!



This talk concerns Dyson Spheres, artifacts constructed to use up to the entire energy output of a star. It will cover a continuous Dyson sphere, as found in G. David Nordley's novelette "Empress of Starlight," as might actually be built by alien civilizations or by ourselves in not too many years, but also partial Dyson spheres, which in a sense we have already started to construct. The talk will explore question of why anyone or anything would build a Dyson sphere, what its capabilities would be as an energy source, as an astronomical instrument, or even as a weapon.  The delectability of complete or partial Dyson spheres will be discussed as will the some implications regarding the existence of, and nature of extraterrestrial intelligence and how their non-detection, so far, may constrain speculation on what an inhabited galaxy might be like.



Mr. Nordley is an astronautical engineer, writer, and retired Air Force officer with experience in spacecraft operations, manufacture, and propulsion.  He is also the author of over a hundred articles, pieces of short fiction, and a couple of science fiction novels.

Weather permitting, the OBSERVATORY at Foothill College will be open for public viewing

from 9 to 11pm,  just as it is every CLEAR Friday night throughout the year.





PAS Logo clothing and other cool items are available at Cafe Press - click on the T-shirt:

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