Cornell Department of Astronomy & Space Sciences Fall 2026 Colloquium Series

The William E. and Elva F. Gordon Distinguished Lectureship

William E. Gordon, then professor of electrical engineering at Cornell, proposed the construction of the Arecibo telescope in 1958 to study the Earth's ionosphere via the incoherent scatter of powerful radio waves from the individual electrons in the ionospheric plasma. He also understood that the telescope would be able to make significant contributions to planetary science and the then relatively new field of radio astronomy. Gordon raised the funding for the telescope and organized its construction. Completed in 1963, the 305m (1000ft) diameter telescope and its powerful radar systems were continuously upgraded over the intervening years and were used to made major advances in the areas of ionospheric physics, radio astronomy and planetary science. Sadly, after fifty-seven years of ground-breaking contributions to astronomy, planetary science and ionospheric physics the telescope collapsed on December 1, 2020.

The Gordon Lectures are made possible by an endowment by Tom and Betty Talpey. Tom and Betty Talpey were one of the families that moved with the Gordon's to Arecibo in the summer of 1960 to supervise the telescope's construction and build the observing instrumentation.

https://astro.cornell.edu/eventsthe-william-e-and-elva-f-gordon-distinguished-lectureship