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Public Evening Lecture Series



Since September 1922, Steward Observatory has been hosting public evening lectures in astronomy. The lectures begin at 7:30 p.m. and are held in Room N210 of Steward Observatory, 933 N. Cherry Ave., Tucson. AZ 85721, unless otherwise noted.  Following all Monday evening talks, the Raymond E. White, Jr. Reflector in the historic Steward Observatory dome will be open for public viewing of the night sky (weather permitting). All of the lectures and the use of the telescope are free of charge and open to the general public.

For more information, contact Dr. Thomas Fleming at 621-5049 or                                                                                                                          

Click here to stream podcasts of previous Public Evening Lectures.


Spring 2020 Steward Public Evening Lectures
Date Speaker Title
Jan. 13

Dr. Thomas Beatty

Steward Observatory

Once You've Discovered Another "Earth", What comes next?


Jan. 21 (TUE) VRO Dark Energy Science
Jan. 27

Dr. George Rieke

Regents Professor

Steward Observatory

The Spitzer Space Telescope:   Rest in Peace
Jan. 30 (THU)

Prof. Francis Su

Dept of Mathematics

Harvey Mudd College

Phi Beta Kappa Visiting Scholar

Mathematics for Human Flourishing

Feb. 17

Prof. Yancy Shirley

Steward Observatory

Celebrating 50 Years of the Discovery of Molecular Clouds

Mar. 2

Dr. Catherine Greer

Steward Observatory

The Monsters of the Universe: Supermassive Black Holes
Mar. 9

Dr. Parker Fagrelius and Dr Aaron Meisner, NSF OIR Lab

DESI: A New 3D Cosmic Map to Study Dark Energy

Mar. 16


Mar. 30


Apr. 13


Apr. 27