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

Tue Jul 27, 2021 12:56 PM in My New Short Story: I Swallowed a Martian
I am a retired astronomer who tries to be helpful in these pages.  I thought you might be intererested to know that "Flash Fiction" magazine in England recently published my very short science-fiction story entitled "I Swallowed a Martian": Any resonance you might find in the story with the pandemic times we are living t...

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):