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PSW grew out of meetings that were held Saturday afternoons in the middle of the Nineteenth century in the home of Joseph Henry, an early researcher in magnetism and the discoverer of electromagnetic self-induction. It was an association of individuals who were interested in science, but in Joseph Henry's words, would discuss “All subjects of interest to intelligent men.” Now, of course, the socie
PSW Lecture| Minutes
On April 10, 2026, at the 2,534th meeting of the Philosophical Society of Washington, Kelly Fast of NASA’s Planetary Defense Coordination Office delivered a compelling lecture titled “Finding Asteroids Before They Find Us.”
The talk highlighted critical efforts to search for near-Earth objects, track and characterize potentially hazardous asteroids, and develop strategies to mitigate impact risks. As emphasized during the lecture: “This is a natural disaster that we could potentially do something about.”
To learn more, visit pswscience.org or explore the PSW Science YouTube channel.
03/06/2026
Lecture Today | PSW
A century ago, a single rocket flight helped ignite the space age.
Join the Philosophical Society of Washington this evening for:
Robert Goddard and the Invention of the Liquid-Fueled Rocket
The 100th Anniversary of First Flight
Presented by Jonathan Coopersmith,
Emeritus Professor of the History of Technology,
Texas A&M University.
The lecture marks the centennial of Robert H. Goddard’s historic 1926 launch of the first liquid-fueled rocket—an experiment that transformed rocketry and helped launch the modern space age.
📅 Today
🕗 8:00 PM
📍 John Wesley Powell Auditorium
2170 Florida Avenue NW, Washington, DC
(Adjacent to the Cosmos Club)
🚪 Doors open at 7:40 PM
🎥 YouTube: https://www.youtube.com/live/eyMmam65NN4
Sponsored by PSW Science Member Ciprian Ivanof
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