FRED ESPENAK, American Astrophysicist, Info, Jul 3, 2025

 

Fred Espenak

Wikipedia

https://en.wikipedia.org › wiki › Fred_Espenak

Fred Espenak Jr. (January 19, 1952 – June 1, 2025) was an American astrophysicist. He worked at the Goddard Space Flight Center and published extensively on ...