Cecilia Payne-Gaposchkin

Cecilia Payne-Gaposchkin, an Anglo-American astronomer, was born May 10, 1900. Completing her undergraduate education in Cambridge, England, she realized early on that the array of opportunities for a woman astronomer in England was very small, so after meeting Harlow...

Cosmic Tremors: The Quest for Colliding Black Holes

The 17th Annual Paul D. Bartlett, Sr. Lecture presented in association with the Harvard-Radcliffe Club of Kansas City, the Princeton Alumni Association of Greater Kansas City, and the Yale Club of Kansas City. Yale astrophysicist Priyamvada Natarajan will trace the history of the idea of black holes and present our evolving understanding of how they form and grow.

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Hermann Carl Vogel

Hermann Carl Vogel, a German astronomer, was born Apr. 3, 1841.  Vogel was a pioneer in applying the new science of spectroscopy to analyzing the motion of celestial bodies.  Johann Doppler had discovered his famous Doppler effect back in the 1840s, revealing that the...

Henry Draper

Henry Draper, an American astronomer, chemist, and photographer, was born Mar. 7, 1837. Draper’s father, John William Draper, was a pioneer astrophotographer – he took the world’s first photograph of the moon in 1840, which is about as early as it could be...

Henry Norris Russell

Henry Norris Russell, an American astronomer, was born Oct. 25, 1877. In the years before 1913, Russell spent his time comparing the luminosity and spectral type of stars. Luminosity–absolute brightness–was not a straightforward determination, since one has to know the distance to a star to determine its absolute brightness, but by 1913, the luminosity of several hundred stars had been reliably determined…