Andrew Fraknoi

I retired from full-time college teaching in 2017 and now teach non-credit classes for retired people at the University of San Francisco and San Francisco State. I am the co-author (with Dennis Schatz) on two NSTA Press books, "When the Sun Goes Dark" and "Solar Science and am the lead author on the free, on-line OpenStax Astronomy textbook: I received NSTA's Faraday Award in 2013 and was the California Professor of the Year in 2007. For more about my work, see:




Fromm Institute, University of San Francisco

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Recent Posts by Andrew

Sun Jul 11, 2021 2:29 AM in Where Does Space Begin?
Dear Colleagues: The current discussion between Richard Branson and Jeff Bezos about where space begins may lead to questions from students, colleagues and friends about this issue.   A few years ago I created an activity, called "How High Up is Space," for the Astronomical Society of the Pacific, on this topic, and it is available free at:

Tue Jul 06, 2021 12:43 PM in moon landing
For science teachers who encounter Moon Landing deniers or students with questions, here are some resources to deal with the issue: Phil Plait’s response to “Moon Hoax”:  Hoax Comments by astronomer Jim Scotti: Moon Base Clavius Site (a group effort at debunking):

Thu May 27, 2021 12:46 PM in Responding to the Avalanche of Gullible UFO Reports in the Media
Dear Colleagues:  Like many science educators, I have been discouraged by the recent flood of credulous stories about UFO's as mysteries related to extra-terrestrials.  From the New York Times, to the New Yorker, to 60 Minutes, the stories follow and credit the same people (untrained in science or photographic techniques) ballyhooing the same misunderstandings.   Last week, even President Bide...